summaryrefslogtreecommitdiff
path: root/16527-h
diff options
context:
space:
mode:
Diffstat (limited to '16527-h')
-rw-r--r--16527-h/16527-h.htm1441
1 files changed, 1441 insertions, 0 deletions
diff --git a/16527-h/16527-h.htm b/16527-h/16527-h.htm
new file mode 100644
index 0000000..016590b
--- /dev/null
+++ b/16527-h/16527-h.htm
@@ -0,0 +1,1441 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN">
+<HTML>
+<HEAD>
+<TITLE>... 1001 </TITLE>
+<META HTTP-EQUIV="CONTENT-TYPE" CONTENT="TEXT/HTML; CHARSET=WINDOWS-1251">
+</HEAD>
+
+<BODY>
+
+
+<pre>
+
+The Project Gutenberg EBook of 1001 tasks for mental calculation
+by Sergej Aleksandrovich Rachinskij
+
+This eBook is for the use of anyone anywhere at no cost and with
+almost no restrictions whatsoever. You may copy it, give it away or
+re-use it under the terms of the Project Gutenberg License included
+with this eBook or online at www.gutenberg.org
+
+
+Title: 1001 tasks for mental calculation
+
+Author: Sergej Aleksandrovich Rachinskij
+
+Release Date: August 14, 2005 [EBook #16527]
+
+Language: Russian
+
+Character set encoding: CP-1251
+
+*** START OF THIS PROJECT GUTENBERG EBOOK 1001 TASKS FOR MENTAL CALCULATION ***
+
+
+
+
+-
+
+
+
+
+
+</pre>
+
+<p>
+ : .. " .. ." ., , 2003
+</p>
+<p> &nbsp;</p>
+<p>
+ . . 1001 , .
+ (1899) . ,
+ .
+</p>
+<p>
+ . . , , .. 365 ,
+ . . .
+. , 480 . .
+</p>
+<p> 1. . 36 . ? [1008]</p>
+<p> 2. 11 23 . 13 19 . ? [500 .]</p>
+<p> 3. 18 18 . 12 23 . ? [600 .]</p>
+<p> 4. 13 39 . 17 29 . ? [1000 .]</p>
+<p> 5. 16 97 . 26 48 . ? [2800 .]</p>
+<p> 6. 31 32 . 28 36 . ? [2000 .]</p>
+<p> 7. 37 37. 11 21 . ? [1600 .]</p>
+<p> 8. 14 . ? [5110]</p>
+<p> 9. 32 , 31 . 25 . ? [1000 .]</p>
+<p> 10. 375 ? [6000]</p>
+<p> 11. 100 . 16 . ? [6 . 25 .]</p>
+<p> 12. 60 . 16 . ? [3 . 75 .]</p>
+<p> 13. 150 . 120 . ? [1 . 25 .]</p>
+<p> 14. 40 . . ? [146 .]</p>
+<p> 15. 10 . 31 18 . 34 . ? [13 .]</p>
+<p> 16. 29 31 . 9 89 . ? [1700 .]</p>
+<p> 17. 3 . 1 . ? [43 .]</p>
+<p> 18. 7 . 1 ., 10 . ? [1 . 43 .]</p>
+<p> 19. 20 . 32 48 . 16 . ? [29 .]</p>
+<p> 20. 5 . 12 19 . 16 . ? [17 .]</p>
+<p> 21. 60 . . ? [219 .]</p>
+<p> 22. 900 . 19 19 . 7 . ? [77 .]</p>
+<p> 23. 9 . 21 21 . 17 . ? [27 .]</p>
+<p> 24. 20 . 63 27 . 23 . ? [13 .]</p>
+<p> 25. , ? [1440; 10080]</p>
+<p> 26. ? ? [1280; 3840]</p>
+<p> 27. ? ? [24000; 42000]</p>
+<p> 28. 19 24 . 17 . 1000 . ? [32 .]</p>
+<p> 29. ( ) ? [8760]</p>
+<p> 30. 15 . 79 , . ? [19 .]</p>
+<p> 31. 69 . 20 ., 1 . ? [29 .]</p>
+<p> 32. 2 2 2 . ? [130]</p>
+<p> 33. 961 . ? [31]</p>
+<p> 34. , . 4 . ? [25 .]</p>
+<p> 35. 7 7 7 . ? [511]</p>
+<p> 36. 9 9 9 . ? [657]</p>
+<p> 37. ( 480 ) 36 . ? [40]</p>
+<p> 38. 17 . 1 . ? [2 . 43 .]</p>
+<p> 39. 1 1 (24 ) 7 . ? [72]</p>
+<p> 40. 1 2 1 . 23 . ? [23]</p>
+<p> 41. 12 37 . 19 24 . ? [9 .]</p>
+<p> 42. 18 18 . 26 26 . ? [10 .]</p>
+<p> 43. 27 37 . 77 13 . ? [20 .]</p>
+<p> 44. 13 39 . 29 17 . ? [10 .]</p>
+<p> 45. 79 19 ., . ? [15 .]</p>
+<p> 46. 1000 . 16 13 . 7 . ? [72 .]</p>
+<p> 47. 15 . 34 25 . 13 . ? [50 .]</p>
+<p> 48. 500 20 . 12 23 . ? [ 28 ]</p>
+<p> 49. 800 . 20 4 . . ? [25 .; 75 .]</p>
+<p> 50. 12 . 8 4 . , . ? [60 .; 1 . 80 .]</p>
+<p> 51. 100 6 . 200 3 . . ? [1 .]</p>
+<p> 52. 20 , 5 5 , 18 . ; . ? [15 .; 60 .; 2 . 40 .]</p>
+<p> 53. 500 . . 7 45 . , , ? [37 .]</p>
+<p> 54. 37 1000 . 30 24 . ? [ 40 .]</p>
+<p> 55. 84 4 . 52 7 . 25 . ? [28 .]</p>
+<p> 56. 47 8 . 1 . ? [17 .]</p>
+<p> 57. 28 , 20 . 8 7 . ? [490 .]</p>
+<p> 58. , 20 , 7 . , 20 ? [3 .]</p>
+<p> 59. 5 1 . 40 . 8 ? [96 .]</p>
+<p> 60. . . 7 ? [4 ]</p>
+<p> 61. . 12 . , 3 . . ? [25 .]</p>
+<p> 62. , . , , 10 . ? [100 .]</p>
+<p> 63. 10 7 . 24 . ? [35 .]</p>
+<p> 64. 980 . , , , 25 . , ? [24500 .]</p>
+<p> 65. 100 ., 65 . , 50 28 . ? [ 3 4 ]</p>
+<p> 66. 5 ., 10 . 25 ? [35 .]</p>
+<p> 67. 6 ., 17 . 20 . ? [25]</p>
+<p> 68. 5 ., 50 . 30 ? [2 . 50 .]</p>
+<p> 69. 2 . 50 . 15 . 45 . ? [22 . 50 .]</p>
+<p> 70. 4 ., . , 100 .? [125]</p>
+<p> 71. 4 . 14, . 18 , 24 . ? [1 .]</p>
+<p> 72. 5 . 5 ., 15 . ? [60 .]</p>
+<p> 73. 1 . 60 ., 6 . ? [12 . 80 .]</p>
+<p> 74. 18 30 . . 8 . 3 . ? [100 .]</p>
+<p> 75. 80 5 . 50 7 . 50 . . ? [25 . ]</p>
+<p> 76. 8 . . 28 . 5 . 40 . 100 ? [ , ]</p>
+<p> 77. (12 ) 60 . 5 5 . ? [60 .]</p>
+<p> 78. 3 . 25 25 . ? [15 .]</p>
+<p> 79. 8 , 1 8 . , 1 21 1 . ? [6]</p>
+<p> 80. 240 25 . 40 . 30 . ? []</p>
+<p> 81. 24 75 . . 40 60 . , 70 . ? [120 .]</p>
+<p> 82. 372 225 . 12 . , 27 . ? [ 70 .]</p>
+<p> 83. 75 ., 20 . ? [140 .]</p>
+<p> 84. 1100 ., 4 . ? [30 .]</p>
+<p> 85. 7 . 68 . . 1 . 20 ., 15 . ? []</p>
+<p> 86. 77 13 . 27 , 37 . ? [2 . ]</p>
+<p> 87. 80 25 . 29 , 69 . ? [1 .]</p>
+<p> 88. 24 . 50 .; 80 . 2 . 10 . ? []</p>
+<p> 89. 75 200 . 3 . 40 250 . . ? [15 .]</p>
+<p> 90. 9 . 1 . 20 4 . 30 . ? [14 . ]</p>
+<p> 91. 18 , 2&#188; . ? [8]</p>
+<p> 92. 80 , . 2000 ? [25 .]</p>
+<p> 93. . ., 24 . . 3 ., 12 . , ? [12 ; 4 .]</p>
+<p> 94. . 7 , 8 ; 9 , 4 . , ? [50; 6]</p>
+<p> 95. 600 . 15 240 . ? [16; 24]</p>
+<p> 96. 320 . , . ? [60 .; 260 .]</p>
+<p> 97. 25 , 5 . 20 . ? [5 ; 120 ]</p>
+<p> 98. . 2 . 40 ., 6 . . 1 . 80 ., 3 . . ? [15 2 .]</p>
+<p> 99. 220 4 , 3 . , . ? [40; 20]</p>
+<p> 100. 7 . 9 . , , ; 150 . ? [15; 5]</p>
+<p> 101. 1 . 33 . , 1 . . ? I [19 .; 38 .; 76 .]</p>
+<p> 102. 2 . 21 . , . . ? [17 .; 51 .; 1 . 53 .]</p>
+<p> 103. 189 . , . . ? [9 .; 36 .; 144 .]</p>
+<p> 104. 248 . , . . ? [8 .; 40 .; 200 .]</p>
+<p> 105. 430 . , . . ? [10 .; 60 .; 360 .]</p>
+<p> 106. , , . . ? [1 ; 3 ; 9 ; 27 ]</p>
+<p> 107. 400 . , , . , . ? [1 .; 7 .; 49 .; 343 .]</p>
+<p> 108. 200 . , . , . ? [10 .; 30 .; 160 .]</p>
+<p> 109. 200 . , 2 . ; . ? [8 .; 32 .; 128 .]</p>
+<p> 110. 16, 20 . 100 . . ? [400 .; 500 .]</p>
+<p> 111. , 24 , 30 8 . 10 . ? [3 . 60 .; 4 . 50 .]</p>
+<p> 112. 50 . ; 300 . ? [162 .; 138 .]</p>
+<p> 113. , 65 . ? [6760]</p>
+<p> 114. 26 48 . 313 25 . ? [4 .]</p>
+<p> 115. 10 ., , (25 .), (20 .), (15 .), . ? [8]</p>
+<p> 116. 1000 , ? [20 2 8 ]</p>
+<p> 117. 39 6 3 . ? [77 ]</p>
+<p> 118. 8 38 . ? [4 375 ]</p>
+<p> 119. 72 , 1 12 ? [126 ]</p>
+<p> 120. 10 8 . 1 5 . ? [8]</p>
+<p> 121. 1 . 8 ? [1 ]</p>
+<p> 122. 38 3 4 . ? [38]</p>
+<p> 123. 45 1 . 35 . ? [7 .]</p>
+<p> 124. 25 2 . 40 . 15 . . ? [15 .]</p>
+<p> 125. 36 . 1 3 6 . ? [24]</p>
+<p> 126. 96 . ? [13 1 ]</p>
+<p> 127. 5 , 7 48 . ? [64]</p>
+<p> 128. 22 . 50 . 125 26 . ? [10 .]</p>
+<p> 129. 50 . ? [500]</p>
+<p> 130. 5 , 2 48 . ? [192]</p>
+<p> 131. 1 . ? [5 5 5 ]</p>
+<p> 132. 25 1 12 . ? [ ]</p>
+<p> 133. 20 . 37 24 . 8 . ? [1 . 39 .]</p>
+<p> 134. 7 2 ., 7 . . ? [1 . 68 .]</p>
+<p> 135. 6 10 2 . ? [18]</p>
+<p> 136. 1 32 . ? [1 8 ]</p>
+<p> 137. 16 . ? [90]</p>
+<p> 138. 30 . ? [1 10 2 ]</p>
+<p> 139. . ? [21]</p>
+<p> 140. 24 9 . ? [2 . 40 .]</p>
+<p> 141. , . : , 10, 100. ? [60]</p>
+<p> 142. 2 3 8 . , 1 2 . ? [40]</p>
+<p> 143. , 16 2 . 3 , 3 2 . ? [5 2 ]</p>
+<p> 144. 1 . 2 38 ? [8 ]</p>
+<p> 145. 10 400 , 45 ? [ 2 ]</p>
+<p> 146. 15 , 3 . ? [73]</p>
+<p> 147. 1 , 1 10 2 ? [30]</p>
+<p> 148. 7 1 1 1 . ? [700]</p>
+<p> 149. 10 . 26 19 . 22 . ? [23 .]</p>
+<p> 150. 20 . , 50 . 71 . ? [288]</p>
+<p> 151. 2 5 30 . ? [24 .]</p>
+<p> 152. , 63 . 15 ., 12 . ? [ 7 ]</p>
+<p> 153. 1 5 . 21 ? [16]</p>
+<p> 154. 27 37 . 13 . 2000 . ? [77.]</p>
+<p> 155. 2 . ? [720 ]</p>
+<p> 156. 1 30 . 1000 ? [25 ]</p>
+<p> 157. 600 7 . , . ? [2 . 50 .]</p>
+<p> 158. 60 . 16 , 2 4 , ; 1 8 . ? [16]</p>
+<p> 159. . 7 48 . ? [512]</p>
+<p> 160. 18 500 . ? [40 000]</p>
+<p> 161. 63 . 1 12 . ? [36]</p>
+<p> 162. 2000 . 44 ; 16 41 .; . ? [48 .]</p>
+<p> 163. 1 , 1 1 12 ? [1 5 ]</p>
+<p> 164. 7 1 1 21 . 20 ? [3 2 12 ]</p>
+<p> 165. 2 2 4 , . 1 . ? [44]</p>
+<p> 166. 24 . ? [9 15 ]</p>
+<p> 167. 72 2 1 24 6 1 . ? [10 ]</p>
+<p> 168. 6 , 5 1 . ? [36]</p>
+<p> 169. 4 . ? [1 5 20 ]</p>
+<p> 170. 5 1 48 . ? [320]</p>
+<p> 171. 2 1 8 . 1 ? [200]</p>
+<p> 172. 4 , . ? [10 . 8 .]</p>
+<p> 173. . . ? [1536]</p>
+<p> 174. 6 15 . ? [9600]</p>
+<p> 175. 6 . 2 9 . ? [ 4 ]</p>
+<p> 176. 8 . 3 . , 12 ? [ 10 ]</p>
+<p> 177. 4 . , 6 , 10 . ? [5 ]</p>
+<p> 178. 7 2 39 . 13 ? [5 21 ]</p>
+<p> 179. 4 3 24 . 2 16 . ? [6]</p>
+<p> 180. 3000 . 36 36 . 24 . ? [71 .]</p>
+<p> 181. , 1 1 , 1 10 . ? [490]</p>
+<p> 182. 2 . 40 . 28 .? [2 8 ]</p>
+<p> 183. 19 1 1 1 . ? [1 19 ]</p>
+<p> 184. , 7 . 28 . ? [90]</p>
+<p> 185. 32 5 . ? [1 2 ]</p>
+<p> 186. 300 . 23 6 . 18 . ? [9 .]</p>
+<p> 187. 4 . 16 4 . 13 . . ? [48 .]</p>
+<p> 188. 4 . 21 11 . 13 . ? [13 .]</p>
+<p> 189. 13 1 . ? [5 ]</p>
+<p> 190. 48 ? [1536]</p>
+<p> 191. 1 2 , 8 ? [14]</p>
+<p> 192. 80 ( 1 ) . ? [2 ]</p>
+<p> 193. 5 3 4 . 30 . ? [6 . 40 .]</p>
+<p> 194. 7 175 ? ? [3 ]</p>
+<p> 195. 9 , 3 ? [16]</p>
+<p> 196. 32 7 . ? [7 ]</p>
+<p> 197. 7 17 . 50 . ? [100 .]</p>
+<p> 198. 4 . 7 24 . 8 . ? [29 .]</p>
+<p> 199. 2 . 3 . . ? [3 .; 6 .]</p>
+<p> 200. 5 36 . ? [20]</p>
+<p> 201. 90 . 2 . 50 . ? [5 .]</p>
+<p> 202. 25 . 1 . 60 ., 2 . . ? [120 .]</p>
+<p> 203. 72 . 100 ., 150 . ? [300 .]</p>
+<p> 204. 50 . 14 3 4 . ? [6 3 .; 8 4 .]</p>
+<p> 205. 5 48 . 7 60 . ? [55 .]</p>
+<p> 206. 300 . 8 . , 12 . . ? [60 .]</p>
+<p> 207. 50 . 6 90 . . ? [3 . 30 .; 4 . 20 .]</p>
+<p> 208. 108 . 3-, 5- 10- . ? [6]</p>
+<p> 209. 64 . 12 23 . 9 . ? [36 .]</p>
+<p> 210. 4 . 7 32 . 11 . ? [16 .]</p>
+<p> 211. 1000 . 70 . 800 .? [5]</p>
+<p> 212. 3 . 8 23 . 4 . ? [29 .]</p>
+<p> 213. 5 12 66 . ? [2 . 40 .]</p>
+<p> 214. 64 . 15 ? [24 .]</p>
+<p> 215. 27 . 3 4 ? [81 ]</p>
+<p> 216. 9 351 . 12 ? [468]</p>
+<p> 217. 192 . 2 6 ? [480 .]</p>
+<p> 218. 5 . 18 ? [3 36 ]</p>
+<p> 219. 64 . 6 4 ? [4 .]</p>
+<p> 220. 1 . 60 . 2 25 ? [4 . 20 .]</p>
+<p> 221. 140 . 19 133 . ? [980 .]</p>
+<p> 222. 180 : 36 , 45. ? [ 20 ]</p>
+<p> 223. 240 : 24 , 40, 30. 240 ? [10 ]</p>
+<p> 224. 5 . 7 9 . 47 . ? [19 .]</p>
+<p> 225. 16 . 5 12 . . ? [2 .; 50 .]</p>
+<p> 226. , . . . ? [2 ; 6 ; 24 ]</p>
+<p> 227. 4 120 . , . ? [8; 16; 32; 64 .]</p>
+<p> 228. 3 . 1 . , . , . ? [7 .; 42 .; 2 . 52 .]</p>
+<p> 229. 108 . . 15 115 . . ? [20 .]</p>
+<p> 230. 7 , 3 . , 25 .? [60 .]</p>
+<p> 231. 4 21, 22, 23 24 , , 100 ? [4; 3; 2; 1]</p>
+<p> 232. 5 . , . . ? [43 .; 86 .; 1 . 72 .]</p>
+<p> 233. 4 . , , . . ? [10 .; 30 .; 90 .; 2 . 70 .]</p>
+<p> 234. 2 . 3 . . ? [1 . 50 .; 4 . 50 .]</p>
+<p> 235. 9 7 5 . , . , ? [16 ; 8 ]</p>
+<p> 236. 14 16 . 12 23 . 4 ; , , . ? [50 .; 1 .; 1 . 50 .; 2 .]</p>
+<p> 237. 5 . 4 ., , . , . 5 . ? [4 .; 20 .; 1 .]</p>
+<p> 238. 23 11 . 19 13 . , . ? [1 . 25 .; 3 . 75 .]</p>
+<p> 239. , , 300 . 23 , 25 , 27. ? [92; 100; 108]</p>
+<p> 240. 3 , 3 . , 483 . , , , . ? [23; 46; 92]</p>
+<p> 241. 2 70 . 32 32 . ? [1 . 48 .]</p>
+<p> 242. 5 13 . 5 7 . ? [10 .]</p>
+<p> 243. 63 . . 3 125 , 3 375 . ? [ 9 ]</p>
+<p> 244. 2 . 18 , 24. 90 . ? [2 . 70 .; 3 . 60 .]</p>
+<p> 245. 37 ., 18 ., 1 , 7 . . ? [12 .]</p>
+<p> 246. 7 2 . 50 . 5 . ? [4 . 90 .]</p>
+<p> 247. 2 , 17, 19 , 5 . 40 . , 1 . 80 . ? [ 20 .]</p>
+<p> 248. 7 2 ., 6 2 . 50 . 5 4 . , 23 .? [ 4 .]</p>
+<p> 249. (120 ) 8 . 9 . ? [6 ]</p>
+<p> 250. . 20 ., 10 ., 5 ., 2 . 2 3 . ? [10 .]</p>
+<p> 251. . 24 2 . 50 . 60 60 . , 6 . . ? [16]</p>
+<p> 252. 144 2 . 24 . 3 ., 20 . ? [120 .]</p>
+<p> 253. 15 . 1 . 75 ., 2 . , 7 . 50 . . ? [6]</p>
+<p> 254. , ( )? [180]</p>
+<p> 255. , (1, 2, 3, 4 )? [396]</p>
+<p> 256. 30 60 . , 111 , ? [7; 14]</p>
+<p> 257. , 5 3 . 32 . 1 . ? [10 .]</p>
+<p> 258. 2 . 40 ., 8 . , , 20 .? [25 ]</p>
+<p> 259. . . 133 , 167. 5 . ? [1 ]</p>
+<p> 260. 4 6 12 1 9 . ? [6 ]</p>
+<p> 261. 23 13 . 7 43 . . ? [15 .]</p>
+<p> 262. . 15 . ? [1 ]</p>
+<p> 263. 4 . , 45 . . . ? [10 .]</p>
+<p> 264. . , 25 , 6 . 15 4 . , ? [9 ]</p>
+<p> 265. 3&#189; 2 . 40 . , 7 . 1 . 60 . , 2 .? [ 1 . 50 .]</p>
+<p> 266. 37 4 . 36 . , 32 .? [ 5 .]</p>
+<p> 267. 200 . , , 11 . , . ? [27; 54; 108 .]</p>
+<p> 268. 3 . 25 15 . ? [25 .]</p>
+<p> 269. 37 6 . 20 . , 18 .? [ 12 .]</p>
+<p> 270. 64 5 . 30 .; 4 . , 70 .? [ 7 .]</p>
+<p> 271. 4 . , , 15 . ? [2 . 40 .]</p>
+<p> 272. . 4 , 3 168 . ? [48]</p>
+<p> 273. 8 6 16 . 10 ? [8 ]</p>
+<p> 274. . 27 7 . , 3 . . ? [63]</p>
+<p> 275. 200 . 8 . ? [136; 64 .]</p>
+<p> 276. 1 , 2. 18 25 . ? ? [11; 7]</p>
+<p> 277. 15 . 3 10 ? [10 . 50 .]</p>
+<p> 278. 154 , , . ? [70; 84]</p>
+<p> 279. 3 . 1 . 20 ? [8 . 60 .]</p>
+<p> 280. 200 . , 10 . ? [130; 70 .]</p>
+<p> 281. 7 4 . 12 ? [11 2 ]</p>
+<p> 282. 7 4 168 . , 5 120 ? [4]</p>
+<p> 283. , 7 , 4 140 . 6 , 8 ? [240]</p>
+<p> 284. 5 32 . 20 . ? [25 .]</p>
+<p> 285. 2000 ., 100 . , 240 50 . ? [15]</p>
+<p> 286. 5 . 13 18 . 14 . ? [19 .]</p>
+<p> 287. , 8 , 5 160 . , 10 280 ? [7 ]</p>
+<p> 288. , . : 2 ; 6 , 6 ; 7 , 7 . ? [100]</p>
+<p> 289. . 7 . , 16 . ; 4 ., 8 . . , ? [8 ; 5 .]</p>
+<p> 290. . 12 ., 60 .; 17 ., 40 . . , ? [20 ; 3 .]</p>
+<p> 291. . 7, 36 . 6 , 12. , ? [300; 48]</p>
+<p> 292. 96 . . 8 148 . 15 . ? [80 .]</p>
+<p> 293. 5 7 2 . 80 .; 5 3 2 . 20 . ? [35 .; 15 .]</p>
+<p> 294. 3 4 30 ., 3 2 24 . ? [6 .; 3 .]</p>
+<p> 295. 360 . 15 , 10 , 6 . ? [ 3 ]</p>
+<p> 296. 240 . 25 ., , . ? [105; 135 .]</p>
+<p> 297. . 48 , 24 , 16 . ? [ 8 ]</p>
+<p> 298. 3 , (480 ). : 96 , 120 , 160 . 3 ? [ 40 ]</p>
+<p> 299. . 234 , 5, 4 . , , 6. ? [312]</p>
+<p> 300. 12 . 3 . 24 ., 20 ., 16 . ? [20]</p>
+<p> 301. 15 ( 7- ) . ? [54 . 60 .]</p>
+<p> 302. , . : , , ; , 1000 . ? [25 .]</p>
+<p> 303. 450 . 18 . 400 ( 3 .). , 120 .? [ 1 . 50 .]</p>
+<p> 304. : 70 350 ., 90 450 . 8 . , 100 . ? [ 45 .]</p>
+<p> 305. 7 9 9 . . ? [90 .; 30 .]</p>
+<p> 306. 42 1 . 2 . , . ? [41 ; 1 1 ]</p>
+<p> 307. 62 7 . 2 5 . ? [27]</p>
+<p> 308. 40 .; 17 . , 150 . ? [500 .]</p>
+<p> 309. 13 3 12 1 . 6 ? [1 18 ]</p>
+<p> 310. 1 . 60 . 3 3 ? [25 .]</p>
+<p> 311. 23 40 . ? [11000 .]</p>
+<p> 312. 77 . ? [40 . 4 .]</p>
+<p> 313. 16 8 7 . 50 . ? [1500 .]</p>
+<p> 314. 7 . 20 . 65 . 52 .? [9 4 ]</p>
+<p> 315. 75 . . 7 . 37 . . ? [192]</p>
+<p> 316. 2 . 50 . 3 , 7 . 65 . . ? [150]</p>
+<p> 317. 64 , 7 20 . 15 . ? [32]</p>
+<p> 318. 1 1 . 48 . ? [7 . 30 .]</p>
+<p> 319. , 63 . ? [6552]</p>
+<p> 320. . 1 1 . ? [960]</p>
+<p> 321. 63 4 . 2 12 . ? [23]</p>
+<p> 322. 100 . ? [300]</p>
+<p> 323. 15 20 1 1 1 . ? [15]</p>
+<p> 324. 8 . 17 17 . 73 . ? [7 .]</p>
+<p> 325. 432 . 1 11 . ? [256]</p>
+<p> 326. . ? [3 ]</p>
+<p> 327. , 5 . ? [256]</p>
+<p> 328. 25 . 5 . ? [ 7 ]</p>
+<p> 329. 2 2 2 2 , 4 . ? [1 21 1 ; 13 1 ]</p>
+<p> 330. 3 2 , 3 . ? [2 8 ; 24 ]</p>
+<p> 331. 148 . 2 5 . ? [64]</p>
+<p> 332. 7 16 . 8 ? [4 ]</p>
+<p> 333. 15 20 1 1 1 . ? [15]</p>
+<p> 334. 3 2 ? [480]</p>
+<p> 335. 10 . 26 . , . 7 , 7 . ? [18 .; 1 . 26 .; 8 . 82 .]</p>
+<p> 336. , 8 , , 8 , . , ? [5; 40; 320]</p>
+<p> 337. 16 . , 80 . . ? [100 .]</p>
+<p> 338. 5 . ? [7200 ]</p>
+<p> 339. 27 7 . 5 . . 2 . 15 . ? [51 .]</p>
+<p> 340. 19 37 . 11 27 . 8 . . ? [125]</p>
+<p> 341. 45 8 , 13 . ? [56]</p>
+<p> 342. 18 36 . 23 24 . 7 . 50 . . ? [160]</p>
+<p> 343. 529 . 1 7 . ? [368]</p>
+<p> 344. 80 1 . 75 . 16 3 . 75 . , 1 . 25 . . ? [160]</p>
+<p> 345. 4 11 ? [320]</p>
+<p> 346. 9 53 . 19 . 10 ., 100 . ? [27 .]</p>
+<p> 347. 7 . 60 . 57 .? [7 20 ]</p>
+<p> 348. 6 . 80 . 13 20 ? [91 . 80 .]</p>
+<p> 349. , . : 2 , 100 . ? [84]</p>
+<p> 350. 48 19 . 23 , 44 . ? [1 .]</p>
+<p> 351. 28 2 16 . 36 ? [3 12 ]</p>
+<p> 352. 7 10 8 . ? [18 ]</p>
+<p> 353. 17 28 1 . ? [1 8 ]</p>
+<p> 354. 24 75 . ? [40 .]</p>
+<p> 355. 7 . ? [8 ]</p>
+<p> 356. 5 37 8 . ? [90 ]</p>
+<p> 357. 5 375 . ? [9 ]</p>
+<p> 358. 27 1 . 89 . ? [2 . 80 .]</p>
+<p> 359. , 8 5 , 10 . 12 , ? [18 ]</p>
+<p> 360. 40 . 4 7 , 9 8 . ? [11 . 20 .; 28 . 80 .]</p>
+<p> 361. 900 . 55 . , , 3600 .? [ 15 ]</p>
+<p> 362. 12 . 50 . 3000 .? [20 ]</p>
+<p> 363. . 20 , 5400 . ? [22 . 50 .]</p>
+<p> 364. 72 . 8 , 6. ? [24; 18]</p>
+<p> 365. 5 . 10. 20 ? [3 ]</p>
+<p> 366. 75 5000 . , , . , ? [80; 40 .]</p>
+<p> 367. 9 . 60 . 4 . ( ), 6 ? [ 10 . 8 .]</p>
+<p> 368. . 15 , 25 . 2 . . ? [ 75 .]</p>
+<p> 369. 83 4 . ? [1000]</p>
+<p> 370. 10 5 35 ., 10 5 40 . , ? [3 .; 2 .]</p>
+<p> 371. ( ) . 4 . ? [10]</p>
+<p> 372. . . , 7 ? [2 4 ]</p>
+<p> 373. 7 . 4 , 28 . 3 , 28 . , ? [40; 3; 4]</p>
+<p> 374. . 65 . ? [6760]</p>
+<p> 375. 25 . . 60 . ? [ 5 ]</p>
+<p> 376. 3 . 41 , 28, 27. . ? [205; 140; 135]</p>
+<p> 377. 7 . ? [24]</p>
+<p> 378. 24 . ? [60 ]</p>
+<p> 379. 100 . 2 120 . ? [25 .]</p>
+<p> 380. 12 , 15 . 5 . . ? [3 .]</p>
+<p> 381. 10 . . ? [60]</p>
+<p> 382. 675 , 25 . , , . ? [150; 225; 300]</p>
+<p> 383. 1 . 60 ., 3 . ? [4 .]</p>
+<p> 384. 1200 . . 150. , ? [240 ]</p>
+<p> 385. 4 16 . 2 16 , 40 . , 1 . ? [1 . 60 .]</p>
+<p> 386. . 5 . , 25 . ; 8 . , 50 . . , ? [25 6 .]</p>
+<p> 387. . 40 . . 60 . . 35 ., 10 . ? [14 ; 500 .]</p>
+<p> 388. . 5, 3- . 4, 11- 3 . , ? [225; 48]</p>
+<p> 389. 150 . 5- , , 25 . ? [100 .]</p>
+<p> 390. 160 . 3- , . 15 . ? [80 .]</p>
+<p> 391. 63 . . 63 9 , 18. ? [ 6 ]</p>
+<p> 392. 3 32 1 . 80 . . ? [72 .]</p>
+<p> 393. 6 24 16 . . ? [52 .]</p>
+<p> 394. 43 7 . 23 13 . 2 . 40 . . ? [250]</p>
+<p> 395. 42 . 19 13 ., 11. 40 . ? [12 . 50 .]</p>
+<p> 396. 23 17 . 29 21 . . ? [25 .]</p>
+<p> 397. 7 3 . 44 2 . 7-, 3? [17; 27]</p>
+<p> 398. 64 , 2 . 80 . ? [6 .]</p>
+<p> 399. 32 , 5 . 4 . 144. 23 ? [ 20 . 70 .]</p>
+<p> 400. 21. 48, . 60 . ? [4 . 20 .]</p>
+<p> 401. , ? : 28 , 4; . ? [24]</p>
+<p> 402. 13 . , . , ? [5; 8]</p>
+<p> 403. 17 2 . . ? [17]</p>
+<p> 404. 17 2 600 . 18 . . ? [21]</p>
+<p> 405. , , . , 8 . . ? [15]</p>
+<p> 406. 25 , 2 38 4 . ? [1 ]</p>
+<p> 407. , 75 . 4 , 3?. ? [10]</p>
+<p> 408. 51 . 2 . 4 , 4&#189;. ? [6]</p>
+<p> 409. 150 . . 6 , 6&#189;. ? [12]</p>
+<p> 410. 14 . 2&#189; . ? [6]</p>
+<p> 411. 3 . 2 . 2 ., 7 . ? [9 ; 25 .]</p>
+<p> 412. 54 , 4&#189;. ? [12]</p>
+<p> 413. 36 ., 672 . ? [100 .]</p>
+<p> 414. 7 10&#189; . ? [24 .]</p>
+<p> 415. 36 . 2 . 50 ., 10 . . , 8 . ? [ 3 .]</p>
+<p> 416. . 2 . 40 . . ? [48 .]</p>
+<p> 417. . 3 2 . 3 . 20 . . ? [1 . 20 .]</p>
+<p> 418. 8 . 4 . , 6 ? [8 . 40 .]</p>
+<p> 419. 2 . 19 . ; 23 . 2 ? [500 .]</p>
+<p> 420. 30 , 20, . 600 . ? [13]</p>
+<p> 421. 5 3 . , 280 ? [84]</p>
+<p> 422. 3 8 . 37 ? ? [100]</p>
+<p> 423. , . 15 ., . 12 ., 20 . , ? [40; 5 .]</p>
+<p> 424. 3 . , 4 ., , . 4 ., , , 28 . ? [100 .]</p>
+<p> 425. . 5 ., 7 . 6 ., 10 . , ? [15; 1 .]</p>
+<p> 426. 3 . 50 . 2 . 10 ., 15 . ? [25]</p>
+<p> 427. . 1000 ., , . ? [4500 .]</p>
+<p> 428. . , 400 , . ? [800]</p>
+<p> 429. , , , . ? [4 .; 2 .]</p>
+<p> 430. , . , , . ? [8 .; 4 .]</p>
+<p> 431. 50 80 . . ? [80 .]</p>
+<p> 432. 48 60- , 2&#189; ? [20]</p>
+<p> 434. 11 . 60 . 3 . 20 . ? [3 10 ]</p>
+<p> 435. 3&#189; 8 . 40 . ? [2 . 40 .]</p>
+<p> 436. 108 . , ? [ 15 ]</p>
+<p> 438. . ? [252 ]</p>
+<p> 439. 10 7 . ? [3 . 36 .]</p>
+<p> 440. . 4 . ? [6 .]</p>
+<p> 441. 4 . 15 . ? [2&#189; .]</p>
+<p> 442. . 50 . ? [60]</p>
+<p> 443. . 20 . ? [80]</p>
+<p> 444. , . : 48 ; 5 ., 150. ? [30 .]</p>
+<p> 445. 9 87&#189; . 15 . ? [4 . 20 .]</p>
+<p> 446. . 8 ? [1 ]</p>
+<p> 447. , 5 . , . ? [9]</p>
+<p> 448. 150 , . , 8 ? [2000]</p>
+<p> 449. 7- 54 . 60 . ? [15]</p>
+<p> 450. 1 . 60 . 150 . ? [6 .]</p>
+<p> 451. 7&#189; . 1000 . ? [5 ]</p>
+<p> 452. 60 . . 75 , 50 . ? [ 4 ]</p>
+<p> 453. 2 . 6 , 6 250 . 8 . ? [100]</p>
+<p> 454. 4 6 16 . 2 . 50 . ? [ 100 .]</p>
+<p> 455. 39 52 . ? [9]</p>
+<p> 456. 50 25 . 15 . . ? [10 .]</p>
+<p> 457. 29 31 . 19 . 500 . ? [21 .]</p>
+<p> 458. 1 . 90 . 95 . , 36 . 10 . ? [31]</p>
+<p> 459. . 2/5 , 1/3 , 4 . ? [12 ]</p>
+<p> 460. 2 . 3/10 , 3/7 . , 2&#189; . ? [16]</p>
+<p> 461. 28 98 . 4- , . ? [56 .; 42 .]</p>
+<p> 462. 1000 . 3/4 , 3/5 , 16 . ? [6 . 25 .]</p>
+<p> 463. 5 60 ., 6 70 . 7 90 . ? [75 .]</p>
+<p> 464. 2 1 . 20 ., 3 1 . 60 . 4 1 . 80 . 2 . . ? [3 . 60 .]</p>
+<p> 465. 5 , , . ? [4]</p>
+<p> 464. 2 1 . 20 ., 3 1 . 60 . 4 1 . 80 . 2 . . ? [3 . 60 .]</p>
+<p> 465. 5 , , . ? [4]</p>
+<p> 466. 8 , 4 . ? [32]</p>
+<p> 467. 4 , 3, . ? [24]</p>
+<p> 468. 7 15 . 7 35 ., 7 15 . 17 35 . , ? [ 3 . 50 .]</p>
+<p> 469. , 12 . ? [52 .]</p>
+<p> 470. 60 . . ? [2 . 40 .]</p>
+<p> 471. 15 24 . , . ? [60]</p>
+<p> 472. 98 8 . 104 4 . . ? [100 .]</p>
+<p> 473. 65 . ? [12 ]</p>
+<p> 474. 18 : . 4 , , 2 . , . 500 . ? [27 .; 29 .]</p>
+<p> 475. 2 42 27 . ? [10]</p>
+<p> 476. 16 7 4 . ? [15]</p>
+<p> 477. 42 7 . ? [1 1 ]</p>
+<p> 478. 2 30 . ? [24 ]</p>
+<p> 479. 2 24 . ? [25 ]</p>
+<p> 480. 41 2 . , ? [12]</p>
+<p> 481. 1 3 5 ? [28]</p>
+<p> 482. 1 1 . 600 ? [25 ]</p>
+<p> 483. 1 2 ? [70]</p>
+<p> 484. 1 5 ? [56]</p>
+<p> 485. . 45 . ? [32]</p>
+<p> 486. 8 , 21 1 . ? [12]</p>
+<p> 487. . ? [3 10 2 ]</p>
+<p> 488. 1 14 . ? [800]</p>
+<p> 489. 4 . ? [10 2 ]</p>
+<p> 490. 4 ; ? [875]</p>
+<p> 491. 9 16 . ? [18 ]</p>
+<p> 492. 12 16 6 2 . ? [5]</p>
+<p> 493. 1 5 , . ? [24]</p>
+<p> 494. 1 3 , . ? [21]</p>
+<p> 495. 1 8 . ? [1000 ]</p>
+<p> 496. 1 1 4 . ? [420 ]</p>
+<p> 497. 38 38 . 12 37 . ? [1000 .]</p>
+<p> 498. 160 ., 5 . ? [32 .]</p>
+<p> 499. 75 ., 10 . ? [50 .]</p>
+<p> 500. 25 2 . 40 ., 5 . ? [20 .]</p>
+<p> 501. 5 3 . 20 ., . ? [8 .]</p>
+<p> 502. . 3 7 ; 3- 67. 7-? [57]</p>
+<p> 503. . 35 35 . 25 31 . ? [4 ]</p>
+<p> 504. 3 34 . , , 4 . ? [24]</p>
+<p> 505. 20- . . ? [160]</p>
+<p> 506. 1 48 . ? [64]</p>
+<p> 507. 7 . , ? [6 .]</p>
+<p> 508. 4 4 . 85- ? [20]</p>
+<p> 509. 8 , 100 . ? [16; 9]</p>
+<p> 510. 8 , , 9. 40 . ? [4080]</p>
+<p> 511. 4 17 . , . ? [12 . 80 .]</p>
+<p> 512. 4 160 . , . ? [5]</p>
+<p> 513. 28 . 100 . ? [2 20 ]</p>
+<p> 514. 7 24 . , 16 ? [19]</p>
+<p> 515. 2&#189; . ? [100]</p>
+<p> 516. 16 . 2&#189; 2&#189; . ? [100 .]</p>
+<p> 517. 5 500 ., 6 250 . 80 . ? [50; 30]</p>
+<p> 518. 1200 . , 65 . 4 35 . ? [48 .]</p>
+<p> 519. 1 8 . 2 ., 9 2 . ? [2 .]</p>
+<p> 520. 75 ., 6 . 4 , 25 . . 6 ? [3 .]</p>
+<p> 521. 7 . 50 . 3 . . , 4 ? [300]</p>
+<p> 522. 28 26 . 14 23 . , . ? [25 .]</p>
+<p> 523. 2 20 8 . ? [1 ]</p>
+<p> 524. 604 . 40 19 . ? [17 ]</p>
+<p> 525. 1 4 2 ? [40]</p>
+<p> 526. 1 8 ( ) 1 . ? [10 ]</p>
+<p> 527. 85 . 34 . 40 ? [100 .]</p>
+<p> 528. 2 . 40 ., 1 . 4 ()? [3 .]</p>
+<p> 529. 40 . , . ? [28; 12]</p>
+<p> 530. 2 . , 8 4 , ? [20]</p>
+<p> 531. 5 2 11 . ? [12]</p>
+<p> 532. 3 , 4 , , 5 . , . ? [60 ]</p>
+<p> 533. 15 . ? [1600]</p>
+<p> 534. 73 . 300 . ? [60 .]</p>
+<p> 535. 8 . ? [8]</p>
+<p> 536. 13 77 . , 7 ? [143]</p>
+<p> 537. (1888 1889) 1 . . [17]</p>
+<p> 538. 25 . ? [2 24 ]</p>
+<p> 539. 5 . 15 . ? [28]</p>
+<p> 540. . 4 . ? [1 4 ]</p>
+<p> 541. 1 48 . 5 . ? [8]</p>
+<p> 542. 1 . ? [18 30 ]</p>
+<p> 543. 7 28 . ? [24]</p>
+<p> 544. 4 32 , , . ? [32 ; 1 ; 3 ]</p>
+<p> 545. 7&#189; . ? [64]</p>
+<p> 546. , 4 5 . , . ? [5 ]</p>
+<p> 547. , 17 , 47 . 13 , 23 . ? [1 ]</p>
+<p> 548. 8 4 . 2 5 ? [40]</p>
+<p> 549. 2&#189; , 7 48 ? [32]</p>
+<p> 550. 7 . 3&#189; . ? [32]</p>
+<p> 551. 3 10 2 . ? [1 ]</p>
+<p> 552. 10 13 1 , 3 1 ? [100]</p>
+<p> 553. 1 9 4 , 3 , ? [200]</p>
+<p> 554. 9 . ? [20]</p>
+<p> 555. 1 15 . , , 1152 ? [ ]</p>
+<p> 556. 25 . 1200 , 16 ? [25 ]</p>
+<p> 557. 2 . , . ? [30 ; 10 ]</p>
+<p> 558. 80 . 48 ? [1 ]</p>
+<p> 559. 25 . 73 . ? [1 . 25 .]</p>
+<p> 560. . , 72. ? [54]</p>
+<p> 561. 12&#189; . ? [8 .]</p>
+<p> 562. 12&#189; . ? [12 .]</p>
+<p> 563. 2 . , . ? [1 250 ; 250 ]</p>
+<p> 564. 24 12&#189; . 32 7&#189;. ? [540 .]</p>
+<p> 565. 1 . 2&#189; . ? [3 . 60 .]</p>
+<p> 566. 48 22&#189; . ? [1080 .]</p>
+<p> 567. 2&#189; . ? [12 .]</p>
+<p> 568. 7&#189; . 180 . ? [24]</p>
+<p> 569. 20 17&#189; . ? [3 . 50 .]</p>
+<p> 570. 48 7&#189; . 96 2&#189; . ? [600 .]</p>
+<p> 571. 2 , . ? [1 200 ; 300 ]</p>
+<p> 572. 11 . , . ? [4 ; 7 ]</p>
+<p> 573. . 1 . ? [15 ]</p>
+<p> 574. , 85 , . 7 30 , 6 40 . ? [5 ]</p>
+<p> 575. 24 . 15 7 . 20 . 1 . 20 . ? [60]</p>
+<p> 576. 8 2 , 603 . 38 , 29 . ? [ 5 ]</p>
+<p> 577. . 23 . , 15 . 17 . , 15 . ? [5 ; 100 .]</p>
+<p> 578. 40 . , 60 . 34 . ? [300]</p>
+<p> 579. 80 . . 320 188 . ? [1 . 50 .]</p>
+<p> 580. 3 23 10 . 1 . 29 ? [2 . 3 .]</p>
+<p> 581. . 70 , 2 6 . 56 , 3 4 . ? [400 ]</p>
+<p> 582. 7 1 . 50 ., 2 . ? [2 . 94 .]</p>
+<p> 583. 1 13 20 1 . ? [137 ]</p>
+<p> 584. 7 3 . 43 ., 1 . ? [24 .]</p>
+<p> 585. . , 96. ? [64]</p>
+<p> 586. 144 , 1&#189; ( ). ? [27]</p>
+<p> 587. 200 . , 240 . 3 . , 80 . 80 .? [1 . 20 .]</p>
+<p> 588. 6 8 37 . 50 . . ? [3000 .]</p>
+<p> 589. 16 , 8 . ? [40]</p>
+<p> 590. 1 15 . 7 20 ? [352 ]</p>
+<p> 591. 96 7 20 40 . ? [18]</p>
+<p> 592. 48 6 10 . 20 . ? [15]</p>
+<p> 593. 60 ., 6 . 75 . . 300 . ? [1 . ]</p>
+<p> 594. 888 . 13 ? [1369 ]</p>
+<p> 595. 28 12 13 . 28 7 12 . 25 . ? [40 .; 15 .]</p>
+<p> 596. , ? : , . ? [2 25 ]</p>
+<p> 597. 80 , 2 16 . ? [1825]</p>
+<p> 598. 2 . 12 : 19 . 15 . . ? [5; 7]</p>
+<p> 599. 300 . 12 , 37 . 19 . . , ? [4; 8]</p>
+<p> 600. 2&#189; . ? [192]</p>
+<p> 601. 200 24 : 7 11 . ? [16; 8]</p>
+<p> 602. 37 . 50 . 10 . 50 ., 14 . ? [40 .]</p>
+<p> 603. 7&#189; . 2 24 ? [18 ]</p>
+<p> 604. 36 . 144, 5 . ? [1 .]</p>
+<p> 605. , 111 . 4 250 , 4 375 . ? [12 ]</p>
+<p> 606. , 63 . 3 125 , 7 125 . ? [6 ]</p>
+<p> 607. , . ? [136 35 ]</p>
+<p> 608. 9 8 7 168 . 10 9 , 8 ? [240]</p>
+<p> 609. 14 , 56. ? [28]</p>
+<p> 610. 7 5 8 140 . 6 7 , 9 ? [189 ]</p>
+<p> 611. 73 . , , . , ? [64 ; 8 ; 1 ]</p>
+<p> 612. 6 , 10 . 37&#189; . ? [96]</p>
+<p> 613. 144 2&#189; . ? [360]</p>
+<p> 614. 4 100 . 4- , 1&#189; , 15 . ? [560 .]</p>
+<p> 615. 12 6&#189; , 32 3&#189; . ? [190]</p>
+<p> 616. 6 , 6&#189; , 26 , 3&#189; . ? [130]</p>
+<p> 617. 4 . 16 , 6&#189; . , 3&#189; . ? [16]</p>
+<p> 618. 2 . , . , ? [125 ; 1 375 ]</p>
+<p> 619. 19 7 110 . 13 ? [4 470 ]</p>
+<p> 620. . 18 25 , 50 . ? [100000]</p>
+<p> 621. , , , , , ? [50000 .]</p>
+<p> 622. 146 . , 24 . . ? [250 .]</p>
+<p> 623. , 600 , 2 . 39 , 5 . ? [8 ]</p>
+<p> 624. 1200 . ? [1 12 ]</p>
+<p> 625. 2000 . 48 28 . , 13 . ? [16]</p>
+<p> 626. 1000 . 24 . 36 ., 53 . , ? [16 ; 8 ]</p>
+<p> 627. (7 ) 7 7 . 25 . ? [99 .]</p>
+<p> 628. 48 2 . ? [4 ]</p>
+<p> 629. - 253 . , . ? [161; 92]</p>
+<p> 630. 3100 . , . ? [2100; 700; 300]</p>
+<p> 631. . 7 , 2 . 10 . ? [1000]</p>
+<p> 632. 5 . 25 ? [12 000]</p>
+<p> 633. 8 , , 8 , . , , ? [320; 40; 5]</p>
+<p> 634. 7 . 7 , 7 . 3 ; 17 , 7 . 8 . ? [1 15 ]</p>
+<p> 635. 777 . , , . , ? [3; 18; 108; 648]</p>
+<p> 636. 5 10000 . , . ? [625; 625; 1250; 2500; 5000]</p>
+<p> 637. 4 120 , , . ? [15; 15; 30; 60]</p>
+<p> 638. 16 ., , . ? [100 .]</p>
+<p> 639. , . 20 , , 7 . ? [30]</p>
+<p> 640. , , 960 . , 12 30 ? [760 ]</p>
+<p> 641. 7 14 , 3 , 7 9 ? [18]</p>
+<p> 642. 10 2 . , . ? [7 ; 3 ]</p>
+<p> 643. 3 2 2 . , . ? [7 ; 4 ]</p>
+<p> 644. 300 . 5 , 1 40 . ? [36 .]</p>
+<p> 645. . 7&#189; . ? [3200]</p>
+<p> 646. , , . . ? [1 ; 3 ; 9 ; 27 ]</p>
+<p> 647. 2 . ( 20 ), 10000 ? [125]</p>
+<p> 648. 10- , . 24 , 40 . . ? [75]</p>
+<p> 649. - . 3 , 7 . ? [40000; 120000; 840000]</p>
+<p> 650. . 80 . . 20 . 76 ., 56 . ? [19 ; 1500 .]</p>
+<p> 651. 7 . , . ? [3 ]</p>
+<p> 652. , 5 , 3 ? [1280]</p>
+<p> 653. 1 30 . ? [480]</p>
+<p> 654. , , . 10 . . 10 . ? [9 .; 90 .; 9 .]</p>
+<p> 655. 80 . . , . ? [30 .; 50 .]</p>
+<p> 656. 10 000 . 3-, 5- . ? [3750 .; 6250 .]</p>
+<p> 657. , 5 . 28 . 1 . , 1 . . ? [ 12]</p>
+<p> 658. 47 47 ., 170 . ? [13 .]</p>
+<p> 659. 2 . 40 , 35. . ? [280]</p>
+<p> 660. . 12 , 9. 5- , . ? [ 180]</p>
+<p> 661. 210 , , 15 ( ). 5- , , - . , ? [7; 10 1/2] '</p>
+<p> 662. . 140 ., 640 ., . ? [1000; 500]</p>
+<p> 663. 10 . 3 5 36 . ? [7 .; 3 .]</p>
+<p> 664. 336 . 7 , 5. ? [196; 140]</p>
+<p> 665. 5 7 56 . 4 . , . ? [7 .; 3 .]</p>
+<p> 666. 12 7 792 . . ? [24; 72 .]</p>
+<p> 667. 312 . . 3 4 900 . 35 . ? [4 .]</p>
+<p> 668. 500 . , 10- 5-. 10- , . ? [30; 40]</p>
+<p> 669. 100 . , 3- 4-. 4 , . ? [12; 16]</p>
+<p> 670. 16 . 52 . 32 ., 24 . ? [44; 8]</p>
+<p> 671. 15 . , 2 ? [20 ]</p>
+<p> 672. 35 . , ? [20 ]</p>
+<p> 673. , , ? [45]</p>
+<p> 674. 2 16 . 14 . 4 . 60 . 5- , . ? [13; 18]</p>
+<p> 675. 1000 . 30 , . 37 ., 32 . ? [8; 22 ]</p>
+<p> 676. , . 2 , . ( ) . ? [13 ]</p>
+<p> 677. . 30 , 36. ? [10 .]</p>
+<p> 678. 80 . 9 . 1 . 60 . ? [250]</p>
+<p> 679. 3 . ; , , , 1872 . ? [624; 52; 12]</p>
+<p> 680. 100 . , 2 . 2 . 9 , 9 . ? [1; 9; 9; 81 .]</p>
+<p> 681. , . 8 . 8 . 4 , 4 1 200 . , , ? [2; 16; 128 .]</p>
+<p> 682. , , 100 . 14 5 , 10 8 , 25 4 . ? [28 .; 32 .; 40 .]</p>
+<p> 684. 40 . 4 . 50 . . 250 . ? [80 .]</p>
+<p> 685. 4 3 . 15 . ? [75; 60]</p>
+<p> 686. 28 , . 7 . ? [36]</p>
+<p> 687. 1600 . 26 , , 17 9 . 42 . . ? [47; 89 .]</p>
+<p> 688. 10 13 2 25 2 . ? [13]</p>
+<p> 689. 10 13 (), 12 1 . ? [27]</p>
+<p> 690. 20 27 , 23 . ? [29]</p>
+<p> 691. , ? : . ? [7 . 20 .]</p>
+<p> 692. , . ? [1440]</p>
+<p> 693. 15 , 300 , 6 . ? [27000]</p>
+<p> 694. . 1 , 2, 3, 4, 5, 6. 1575 . ? [75; 150; 225; 300; 375; 450]</p>
+<p> 695. 800 . . 3 ? [2700 .]</p>
+<p> 696. , , . 1 . 60 ., 2 . 64 . 3 ? [125]</p>
+<p> 697. 400 . . 4 ? [2025 .]</p>
+<p> 698. 13 13 14 14 . ? [1 ]</p>
+<p> 699. . 10 10 ., 11 11 . 12 12 . ? [ 1 .]</p>
+<p> 700. . 27 . . ? [27]</p>
+<p> 701. 17 17 21 21 . , 1 ? [ 2 ]</p>
+<p> 702. 1 1 1 . ? [25 ]</p>
+<p> 703. . 20- , . . 20 , 200 , 130 26 . 70 . ? [56 .]</p>
+<p> 704. 15 6 2 . ? [ 1 1 ]</p>
+<p> 705. 25 , . , . ? [24 ; 24 ; 24 ]</p>
+<p> 706. 1000 . . ? [3375 .]</p>
+<p> 707. . 675 . ? [200 .]</p>
+<p> 708. 5 . 256 . 25 . . ? [625 .]</p>
+<p> 709. 625 . 20 . . 4 ? [1296 .]</p>
+<p> 710. 26 26 28 28 . ? [4 ]</p>
+<p> 711. 72 1 1 . , , . ? [1 ]</p>
+<p> 712. 73 , 8 4 . ? [47; 26]</p>
+<p> 713. 8 , 12 16 15 . , , , . ? [90 .; 45 .; 15 .]</p>
+<p> 714. 27 4 . 2 . 40 . . , 18 .? [ 2 . 80 .]</p>
+<p> 715. 400 . 8 , 6 , 4 . , . ? [8 .; 24 .; 48 .]</p>
+<p> 716. 16 , 9 4 200 . , . ? [4 .; 8 .; 16 .]</p>
+<p> 717. 2 . 2 . 3 , , . 1 ? [5 ]</p>
+<p> 718. 12 . 237 , 2 13 . ? [25]</p>
+<p> 719. 12 12 . 3 . ? [64 .]</p>
+<p> 720. 16 . 16 16 . 6 . ? [40 .]</p>
+<p> 721. 11 , 11 , 11 . 37 37 . ? [27 .]</p>
+<p> 722. : 1 , 2, 3, .. ? [ 25 ]</p>
+<p> 723. 40 . , 12 . 50 . , 2 . . ? [400 .]</p>
+<p> 724. 10 , 8 . 2 . 50 . . ? [100 .]</p>
+<p> 725. 100 350 . 2 , 28 , 2 . 50 ., 4 . . ? [46 . ]</p>
+<p> 726. 378 . 63 , 54, 27. 378 ? [14 ]</p>
+<p> 727. 43 93 . 23 87 . ? [6000 .]</p>
+<p> 728. 5000 . 49 51 . 41 . ? [61 .]</p>
+<p> 729. 18 . 25 . ? [60 .]</p>
+<p> 730. . 12 , , 9 . ? [72 ]</p>
+<p> 731. . 6, 8 . 4- , . ? [192]</p>
+<p> 732. 100 5 . 2 , 4, 9 . , , . ? [80; 20]</p>
+<p> 733. , 1001 . 2 24 , 1248 . ? [13]</p>
+<p> 734. 2 4 , 6 . 2&#189; . ? [7 . 20 .]</p>
+<p> 735. 7 , 10 . 150- , . ? [1 ]</p>
+<p> 736. 5 . . 35 3 . 6 . 5 . . ? [100]</p>
+<p> 737. 3 , 5. 4 , 15. ? [83]</p>
+<p> 738. . 2 . 25 ., 2 . 40 . 2 . 75 ., 5 . 60 . . , ? [16; 2 . 40 .]</p>
+<p> 739. 28 3 . 50 . 24 4 . 25 . , 8 .? [ 4 .]</p>
+<p> 740. 4 ., , . 55 ., , . ? [13 .; 17 .]</p>
+<p> 741. 20 ., . 200 ., . ? [90 .]</p>
+<p> 742. : 16 16 ., 8 18 ., 16 13 . 28 14 . ? [10 .]</p>
+<p> 743. 4 . 8 . 4 , 3 . 40 . ? [24]</p>
+<p> 744. 20 , 12 , . 7 4 . ? [4 7 ; 8 4 ]</p>
+<p> 745. 6 . 21 , 6 4 . ? [6 6 ; 15 4 ]</p>
+<p> 746. 3 60 . , 10 . ? [ 4 ]</p>
+<p> 747. 15 . 3&#189; . 7 , 24 ? [720]</p>
+<p> 748. 80 , 8 5 , 28 7 24 6 . ? [1 ]</p>
+<p> 749. 32 17 ., 32 23 ., 18 13 . 28 27 . ? [20 .]</p>
+<p> 750. 40 . 11 , 12- 9-. ? [7 12 ; 4 9 ]</p>
+<p> 751. 1000 . 44 18 26 . ? [18; 26]</p>
+<p> 752. 1000 . 26 18 ., 18 26 . 8 . ? [8 .]</p>
+<p> 753. 4 . 10 . 7 , 3 , . ? [ 10 ]</p>
+<p> 754. 31 4 , 18 . 1 13 , 1 11 . ? [7; 11]</p>
+<p> 755. . 4 6 . 8 . ? [6 ]</p>
+<p> 756. . 8 , , 9 . ? [48]</p>
+<p> 757. 10 13 1 25 . ? [13 1 ]</p>
+<p> 758. 15 20 1 9 2 . ? [12]</p>
+<p> 759. . 7&#189; . ? [1168]</p>
+<p> 760. 32 10 2 16 8 2 . ? [15 ]</p>
+<p> 761. 2 1 15 , 1 13 . ? [27]</p>
+<p> 762. 5 3 1 . 1 7 . ? [23]</p>
+<p> 763. 320 6 . 25 . , . 7 , . ? [40 .; 280 .; 1680 .]</p>
+<p> 764. 20- 36 , 2&#189; ? [126]</p>
+<p> 765. 1 , 3 1 . ? [3 ]</p>
+<p> 766. . 10 . . 20 ., 3 . 45 . , 30 . . ? [10 .]</p>
+<p> 767. 40 , 17. ? [6]</p>
+<p> 768. 40 . , 3 ? [6340]</p>
+<p> 769. , , . 150 . ? [72; 36; 24; 18]</p>
+<p> 770. , . 6 , 7 . ? [7; 13; 20 ]</p>
+<p> 771. 5 80 , 4- , . ? [8 ]</p>
+<p> 772. 2 3 . 3 , 4 . ? [18 ; 21 ; 25 ]</p>
+<p> 773. , . 77 . ? [42; 21; 14]</p>
+<p> 774. 15 . 4 , 5 . , 5 .? [180 .]</p>
+<p> 775. 61 . 41 . . ? [2500]</p>
+<p> 776. , 161 , 7 . 2 , 48, 44 ? [4 ]</p>
+<p> 777. , 48 , 90 , 7 9 ? [1008 ]</p>
+<p> 778. . 5 . ? [1 1 1 ]</p>
+<p> 779. 5 . 6 6 . 3 20 64 . . ? [2]</p>
+<p> 780. 5 , 7. 5, 30 . ? [110]</p>
+<p> 781. 6 . 3 200 ., , . ? [1800 .]</p>
+<p> 782. 50 ., , . 650 ., , . , ? [250; 300 .]</p>
+<p> 783. 100 . 12 . . ? [3 ]</p>
+<p> 784. 20 30 340 .; 1 1 13 . ? [5 .; 8 .]</p>
+<p> 785. 4 . , 27 . 3 . 40 .? [25 .]</p>
+<p> 786. 3 , 1 1 . , , , . ? [13 21 ; 4 15 ; 1 13 ]</p>
+<p> 787. 729 , 4 . . . , , . ? [45 .; 90 .; 1 . 8 .]</p>
+<p> 788. 5 5 , 25 . , 15 15 15 . . ? [40 .]</p>
+<p> 789. 20 . , . ? [60 .; 40 .]</p>
+<p> 790. 1 12 6 10 . 80 . 1 ( 2 )? [4000 .]</p>
+<p> 791. 156 . 2 . 7 , 50 . ? [12 ]</p>
+<p> 792. 5 6 . 7 15 40 . ? [450]</p>
+<p> 793. 1 . ? [504]</p>
+<p> 794. : 352 . , 28 . , 6 . . ? [1000 .]</p>
+<p> 795. 26 28 . 12 31 . 2 . 75 . . ? [400]</p>
+<p> 796. 12 2 . 50 . , , 19 , 60 . ? [300 .]</p>
+<p> 797. ; 1 2 . ? [48 ]</p>
+<p> 798. 5&#189; . , . , ? [2; 3&#189;]</p>
+<p> 799. . 9 20 . 5 , , , . 100 ? [10 ]</p>
+<p> 800. 12 . 300 . , , , . , ? [5; 7]</p>
+<p> 801. 3000 . 48 . 31 71 . ? [ 47 .]</p>
+<p> 802. 8 2000 . 5 12 . 400 . . ? [125]</p>
+<p> 803. 10 . 80 . ? [ 30 .]</p>
+<p> 804. 11 , 11 , 11 . , 148 9 . 25 . , 2 . 25 . . ? [30]</p>
+<p> 805. 6 25 . 6 ? [2400]</p>
+<p> 806. 13 1 . 96 ? [1 ]</p>
+<p> 807. 26 . 26 28 . 28 . ? [ 4 .]</p>
+<p> 808. , . , 5 . 2 , 5 . , ? [ 20; 15]</p>
+<p> 809. : 8 , , . : 8 , . ? [56; 40]</p>
+<p> 810. . 5 , , . ? [ 10]</p>
+<p> 811. 44 44 . 29 29 . , 3 . ? [ ]</p>
+<p> 812. 1 13 . . ? [72 .]</p>
+<p> 813. 29 29 ., 20 20 . 21 21 . ? []</p>
+<p> 814. 40 . 16 37 , 17. ( 6 4 ). ? [4]</p>
+<p> 815. 19 121 . 37 73 . ? [5000 .]</p>
+<p> 816. 13 77 . 10- 10 . , . ? [ 1000 .]</p>
+<p> 817. 9 6 50 . 49 2 &#189; 5 10 . ? [392]</p>
+<p> 818. 392 . 3 7 45 . 2 7 15 . ? [28]</p>
+<p> 819. 2 . 39 , 26 . ? [156]</p>
+<p> 820. 60 . , 200 . , ? [8 .]</p>
+<p> 821. 80 , 9 , 16 , 60 ? [27 .]</p>
+<p> 822. 400 , 6 20 , 25 ? [104]</p>
+<p> 823. 25 96 6 10 . ? [24]</p>
+<p> 825. 116 29 . 25 . ? [6 10 ]</p>
+<p> 826. 5 64 ., 7 4 24 . ? [ 4 ]</p>
+<p> 827. 3 . 4 . 17 . , 1 . 25 . . ? [75]</p>
+<p> 828. , 270 . , 45 . ; 17 ., 13 . , ? [6 . 30 .]</p>
+<p> 829. , 2300 ., . 894 ., 789 . ? [256 .; 361 .]</p>
+<p> 830. . 12 , , . ? [ 16]</p>
+<p> 831. . 34 6 . 50 . 4 . 25 . ? [52]</p>
+<p> 832. 10 . , 30 . 59 ., 24 . ? [8; 22]</p>
+<p> 833. 8 14 . 75 . . 12 , 10 . ? [ 70 .]</p>
+<p> 834. . 1 . 60 ., 6 . 2 ., 10 . . , ? [40 ; 70 .]</p>
+<p> 835. 2 3 27 . 4 5 51 . , ? [9 .; 3 .]</p>
+<p> 836. 2 3 26 . 3 2 29 . , ? [7 .; 4 .]</p>
+<p> 837. ; , (1891, 1892) , 2 . 6 , , 6 , , . , , ? [612; 102; 17 .]</p>
+<p> 838. 5 . . 5 , , . ? [75]</p>
+<p> 839. 1 208 1 . , 2 4 ? [100]</p>
+<p> 840. 78 5 . 3 4 . ? [1000]</p>
+<p> 841. 64 . 156 . 25 .? []</p>
+<p> 842. 7 24 . , . , 7 1 . ? [8 ]</p>
+<p> 843. 27 16 . , 12 ? [36]</p>
+<p> 844. 24 24 . 18 ? [32]</p>
+<p> 845. 2 . 100 . 28 63 . . ? [81 .; 144 .]</p>
+<p> 846. 5 , 6 . 14 . , 2 .? [ 3 .]</p>
+<p> 847. 23 87 . 43 93 . 125 . ? [48 .]</p>
+<p> 848. 25 3 . , . ? [24 ; 30 ; 10 ]</p>
+<p> 849. 1 . 55 . 1 . 80 . , 60 . . ? [72]</p>
+<p> 650. 300 . 240 . 18 . . 1 . . 15 , 54 . . ? [1 . 60 .]</p>
+<p> 851. 19 , 13. 624 . ? [912]</p>
+<p> 852. 20 4 . 2 . , , , . ? [91; 111]</p>
+<p> 853. 70 . 2 , 10 , , 3&#189; , 2&#189; . ? [ 1 ]</p>
+<p> 854. 8 , 6 , 26 . 13 , 4 ? [ 24 ]</p>
+<p> 855. 78 5 . . ? [100000]</p>
+<p> 856. 63 , 52 1 8 ? [10 ]</p>
+<p> 857. . 1892 , 1 1 , 40 .? [36 .]</p>
+<p> 858. 161 529 . 63 ? [207]</p>
+<p> 859. 4 (149 ), (52), (30), (23) (21). 100 . ? [11]</p>
+<p> 860. 4 , 5 6 14 . 40 . , . ? [15 .; 60 .; 1 . 80 .]</p>
+<p> 861. 12 14 216 . . ? [4; 12 .]</p>
+<p> 862. 282 , 3 5 . ? [14]</p>
+<p> 863. 10400 , 3 20 . ? [60]</p>
+<p> 864. 2 15 . , 1 ? [666]</p>
+<p> 865. 1 2 . 2 . 1 ? [24 .]</p>
+<p> 866. 604 . 8 . 5&#189; , . ? [35; 40&#189;]</p>
+<p> 867. 450 . , . 18 , . ? [ 6 ]</p>
+<p> 868. . 1000 , 25 ? [ 5]</p>
+<p> 869. 26 26 ., 18 18, 16 16, 12 12 11 11 39 . ? [39]</p>
+<p> 870. 32 , 5, 3. , , ? [24]</p>
+<p> 871. 4 : 2, 4, 6 8- . 35 . ? [5]</p>
+<p> 872. , . , . ? [ 1 .]</p>
+<p> 873. , . , . ? [, 4 .]</p>
+<p> 874. , . , , , . ? [ , ]</p>
+<p> 875. . , , , . ? [9; 7]</p>
+<p> 876. 30 , 4, 2. ? [6]</p>
+<p> 877. 27 27 43 17 . , 1 ? [ 4 ( )]</p>
+<p> 878. , 85 , 221 . , 60 ? [156]</p>
+<p> 879. 1 . 40 . , 280 100 .? [80 .]</p>
+<p> 880. 273 60 ., 600 . ? [3 .]</p>
+<p> 881. 273 2 . . 40 . . ? [400 .]</p>
+<p> 882. 300 . 5 1 15 . ? [80 .]</p>
+<p> 883. (1892) , . ? [6 ]</p>
+<p> 884. 75 , . ? [3 ]</p>
+<p> 885. 4 1891 , . ? [15]</p>
+<p> 886. 32 . , . ? [26 ; 6 ]</p>
+<p> 887. , , 15 , 3/4 . ? [1000 ]</p>
+<p> 888. 1 9 50 . 8 , 7 30 ? [1000 ]</p>
+<p> 889. 30 , 9,10 11. , , ? [ 30 ]</p>
+<p> 890. . 3 37 9 . ( ) ? [1 ]</p>
+<p> 891. . 2 , 3 , 6 . ? [ 1 ]</p>
+<p> 892. ( ) 1892 ? [5040 ]</p>
+<p> 893. ? [40 320 ]</p>
+<p> 894. , . . ? [15 .]</p>
+<p> 895. . 1 , 2, 3 .. ? [300]</p>
+<p> 896. 32 . , . ? [26; 6]</p>
+<p> 897. 28 . , 1 . 12 ? [270]</p>
+<p> 898. ; 5 1 168 . ? [70 .]</p>
+<p> 899. 450 . 2 . 1 , 1 . ? [315]</p>
+<p> 900. , . , . , 33 ? [12 ]</p>
+<p> 901. 240 600 . . 2/3 , 48 , . ? [80 .]</p>
+<p> 902. 10 . 8 1 . ? [80-]</p>
+<p> 903. 2 . 4 48 . ? [72-]</p>
+<p> 904. 400 700 . , 20 . ? [ 2 . 10 .]</p>
+<p> 905. 16 ., 96 . ? [100 .]</p>
+<p> 906. 42 42 , . , ? [147]</p>
+<p> 907. 10 4&#189; . 3 6 . ? [12]</p>
+<p> 908. 63 . 3 3&#189; . , 4&#189; , . ? [ 7 ]</p>
+<p> 909. 5 7 . 261 ( 6 )? [8]</p>
+<p> 910. 54 , 29. , . ? [4 ]</p>
+<p> 911. , , , , . ? [100 . 80 .]</p>
+<p> 912. 31 . , , . ? [3; 7; 21 ]</p>
+<p> 913. 219 40 . . 60 . . ? [0]</p>
+<p> 914. , 2 . 50 . . 6 . 3 . . ? [36]</p>
+<p> 915. 6 . . 15 . , 8 . , , 30 . . ? [75 ]</p>
+<p> 916. , 4 ( ). 9 . ? [10 ]</p>
+<p> 917. . 30 10 . ? [48]</p>
+<p> 918. ( ) 4 . ? [ 5 ]</p>
+<p> 919. 3 . 13 , 18 . , , . ? [800]</p>
+<p> 920. 12 ., 1 ., 3, 5, , . ? []</p>
+<p> 921. , . 3 , , . 3 , . ? [12]</p>
+<p> 922. 200 . 42 . , 3 7 , 5- , 25 . ? [100 .]</p>
+<p> 923. 40 5 ., ( 3 ) 2 . 6 . ? [100 .]</p>
+<p> 924. , . , (1, 3, 5, 10, 25, 100). ? [1728 .]</p>
+<p> 925. , 300, 3000 . 100 ., 125 . , ? [12 ; 1500 .]</p>
+<p> 926. , 10 . 10 . , , 10 , , .. , . , 7 ? [ ]</p>
+<p> 927. 7 24 . . 5 . ? [35 .]</p>
+<p> 928. 3 5 . , , 9- 5 . . 120 . . ? [1&#189; ]</p>
+<p> 929. . 49 . ? [84]</p>
+<p> 930. 21 . 25 . 17 . , 19 7 ? [33 . 25 .]</p>
+<p> 931. 100 4 10 . 576 ? [ ]</p>
+<p> 932. 604 . 7 39 . 1 , 35 . ? [ 6 ]</p>
+<p> 933. 16 300 . 6 , 12 8 , , . ? [10]</p>
+<p> 934. 7 , 7 7 . 6. 12. ? [5 ]</p>
+<p> 935. 30 3000 . 113 . 83 . . ? [17; 13 ]</p>
+<p> 936. , ? : ; 40 . ? [15]</p>
+<p> 937. . 3- , 8- , 5-. ? [60 .]</p>
+<p> 938. , . , 1 5 . ? [2 20 ]</p>
+<p> 939. 31 . 25 . 48 48 . 29 24 . ? [8]</p>
+<p> 940. 8 , 1 1 ? [7 ]</p>
+<p> 941. . 75 ? [4]</p>
+<p> 942. 40 1200 . ? [100]</p>
+<p> 943. 24 , 30 . ? [600]</p>
+<p> 944. , . , , , , , , . 100 . ? [4]</p>
+<p> 945. 770 . , . ? [576; 192; 2]</p>
+<p> 946. 1 . , . ? 350 ; 150 ]</p>
+<p> </p>
+<p> 947. 20 , 15 . ? </p>
+<p> 948. 16 , 10 . ? [15]</p>
+<p> 949. 12 1 8 , 12 . ? [16]</p>
+<p> 950. 1 , . 32 ? [75]</p>
+<p> 951. , 28 , 20. 35 16 . , ? [150]</p>
+<p> 952. 15 , 8 . 4 , 2 8 . ? [12]</p>
+<p> 953. , 12 . 1 8 . ? [96]</p>
+<p> 954. 5 , 3. 5 , 3. ? [9]</p>
+<p> 955. 10 , 8 . 10 , 8. ? [256]</p>
+<p> 956. 12 , 7 2 ( 2 . 50 .). ? [105 .]</p>
+<p> 957. 9 , 6 . . ? [294]</p>
+<p> 958. 12 , 5. , , , . ? [1 ]</p>
+<p> 959. 1 . 7 , , 7 , , 7 , , 1 2 . ? [9 ]</p>
+<p> 960. 12 , 8. , ? [120]</p>
+<p> 961. 12 , 40 . ? [6]</p>
+<p> 962. 28 , 8 . 4 2 , 3. 54 . ? [12 .]</p>
+<p> 963. . 6 . 280 . ? [1 ]</p>
+<p> 964. . , 4 . 200 . ? [100]</p>
+<p> 965. 5 , 28 . ? [180]</p>
+<p> 966. 75 , 140 . ? [500]</p>
+<p> 967. 8 , 7 8 6 . 12 8 , 12 ? [15 .]</p>
+<p> 968. 6 , 6 , , 12 ? [64]</p>
+<p> 969. 12 , 8 , , 12 ? [384]</p>
+<p> 970. , 40 . 1 8 ? [80]</p>
+<p> 971. 49 , 35. 3 5 . ? [525]</p>
+<p> 972. 1 , 20 . ? [100]</p>
+<p> 973. 3 , 2 12 . 2 , 1 8 ? [6]</p>
+<p> 974. 35, 12 14 . , 25 , 24? [20]</p>
+<p> 975. 8 , , 60 . 9 , 8? [90 .]</p>
+<p> 976. 12 , 12 . , , 4 8 , 12 ? [6]</p>
+<p> 977. 12 , 1 4 . , 13 , 6, 3 , 3 , 2? [4]</p>
+<p> 978. 12 , 7 8 , 5 . 9 , 8? [4 .]</p>
+<p> 979. 80 1 4 . 2 ? [50] </p>
+<p> 980. 12 , 7, 2. 1 75 . ? [126 .]</p>
+<p> 981. , 4 , 5 . 1 1 . 25 . ? [50 .]</p>
+<p> 982. 2 , 3, 7 . 40 . ? [1680]</p>
+<p> 983. : 6, 3 1&#189; . , , 12 ? [64]</p>
+<p> 984. 5 , 2 1 , 1 8 ( 750 . ). ? [1]</p>
+<p> 985. 12 , 12 3 12 . ? [20]</p>
+<p> 986. 3 , 2 , 1 . , () 1 ? [288]</p>
+<p> 987. 12 , 6 , 2 . 18 , 12, 9. 3 , ? [ 4 ]</p>
+<p> 988. (6, 3, 1&#189; ) , , 3 , 15 ? [400]</p>
+<p> 989. 6, 3, 1&#189; ), 25 , 3 12 , 18 ? [18000]</p>
+<p> 990. , 1 30 &#215; 40 ? [400]</p>
+<p> 991. 16 , 12. , 6 ? [24]</p>
+<p> 992. 8 , 6. , 1 ? [1 ]</p>
+<p> 993. 4 , 1 1 8 , 2 1 8 ( . 40 ). ? [600]</p>
+<p> 994. 2 , 1&#189;, 1 . , () 1 ? [576]</p>
+<p> 995. 40 1 37 1 . ? [25 ]</p>
+<p> 996. 1 , 8 , 3 . 150 , 1 2 ? [160 ]</p>
+<p> 997. 1 7 1 . 300 . ? [8]</p>
+<p> 998. 10 , 4 , 2 12 . ? [90]</p>
+<p> 999. 7 , 5 , 4 . ? [560]</p>
+<p> 1000. 3 , 2 8 15 . 10 , ? [120 .]</p>
+<p> 1001. 8 , 4 , 1 1 8 . 1 . 50 . ? [72 .] </p>
+
+
+
+
+
+
+
+<pre>
+
+
+
+
+
+End of the Project Gutenberg EBook of 1001 tasks for mental calculation
+by Sergej Aleksandrovich Rachinskij
+
+*** END OF THIS PROJECT GUTENBERG EBOOK 1001 TASKS FOR MENTAL CALCULATION ***
+
+***** This file should be named 16527-h.htm or 16527-h.zip *****
+This and all associated files of various formats will be found in:
+ https://www.gutenberg.org/1/6/5/2/16527/
+
+-
+
+Updated editions will replace the previous one--the old editions
+will be renamed.
+
+Creating the works from public domain print editions means that no
+one owns a United States copyright in these works, so the Foundation
+(and you!) can copy and distribute it in the United States without
+permission and without paying copyright royalties. Special rules,
+set forth in the General Terms of Use part of this license, apply to
+copying and distributing Project Gutenberg-tm electronic works to
+protect the PROJECT GUTENBERG-tm concept and trademark. Project
+Gutenberg is a registered trademark, and may not be used if you
+charge for the eBooks, unless you receive specific permission. If you
+do not charge anything for copies of this eBook, complying with the
+rules is very easy. You may use this eBook for nearly any purpose
+such as creation of derivative works, reports, performances and
+research. They may be modified and printed and given away--you may do
+practically ANYTHING with public domain eBooks. Redistribution is
+subject to the trademark license, especially commercial
+redistribution.
+
+
+
+*** START: FULL LICENSE ***
+
+THE FULL PROJECT GUTENBERG LICENSE
+PLEASE READ THIS BEFORE YOU DISTRIBUTE OR USE THIS WORK
+
+To protect the Project Gutenberg-tm mission of promoting the free
+distribution of electronic works, by using or distributing this work
+(or any other work associated in any way with the phrase "Project
+Gutenberg"), you agree to comply with all the terms of the Full Project
+Gutenberg-tm License (available with this file or online at
+https://gutenberg.org/license).
+
+
+Section 1. General Terms of Use and Redistributing Project Gutenberg-tm
+electronic works
+
+1.A. By reading or using any part of this Project Gutenberg-tm
+electronic work, you indicate that you have read, understand, agree to
+and accept all the terms of this license and intellectual property
+(trademark/copyright) agreement. If you do not agree to abide by all
+the terms of this agreement, you must cease using and return or destroy
+all copies of Project Gutenberg-tm electronic works in your possession.
+If you paid a fee for obtaining a copy of or access to a Project
+Gutenberg-tm electronic work and you do not agree to be bound by the
+terms of this agreement, you may obtain a refund from the person or
+entity to whom you paid the fee as set forth in paragraph 1.E.8.
+
+1.B. "Project Gutenberg" is a registered trademark. It may only be
+used on or associated in any way with an electronic work by people who
+agree to be bound by the terms of this agreement. There are a few
+things that you can do with most Project Gutenberg-tm electronic works
+even without complying with the full terms of this agreement. See
+paragraph 1.C below. There are a lot of things you can do with Project
+Gutenberg-tm electronic works if you follow the terms of this agreement
+and help preserve free future access to Project Gutenberg-tm electronic
+works. See paragraph 1.E below.
+
+1.C. The Project Gutenberg Literary Archive Foundation ("the Foundation"
+or PGLAF), owns a compilation copyright in the collection of Project
+Gutenberg-tm electronic works. Nearly all the individual works in the
+collection are in the public domain in the United States. If an
+individual work is in the public domain in the United States and you are
+located in the United States, we do not claim a right to prevent you from
+copying, distributing, performing, displaying or creating derivative
+works based on the work as long as all references to Project Gutenberg
+are removed. Of course, we hope that you will support the Project
+Gutenberg-tm mission of promoting free access to electronic works by
+freely sharing Project Gutenberg-tm works in compliance with the terms of
+this agreement for keeping the Project Gutenberg-tm name associated with
+the work. You can easily comply with the terms of this agreement by
+keeping this work in the same format with its attached full Project
+Gutenberg-tm License when you share it without charge with others.
+
+1.D. The copyright laws of the place where you are located also govern
+what you can do with this work. Copyright laws in most countries are in
+a constant state of change. If you are outside the United States, check
+the laws of your country in addition to the terms of this agreement
+before downloading, copying, displaying, performing, distributing or
+creating derivative works based on this work or any other Project
+Gutenberg-tm work. The Foundation makes no representations concerning
+the copyright status of any work in any country outside the United
+States.
+
+1.E. Unless you have removed all references to Project Gutenberg:
+
+1.E.1. The following sentence, with active links to, or other immediate
+access to, the full Project Gutenberg-tm License must appear prominently
+whenever any copy of a Project Gutenberg-tm work (any work on which the
+phrase "Project Gutenberg" appears, or with which the phrase "Project
+Gutenberg" is associated) is accessed, displayed, performed, viewed,
+copied or distributed:
+
+This eBook is for the use of anyone anywhere at no cost and with
+almost no restrictions whatsoever. You may copy it, give it away or
+re-use it under the terms of the Project Gutenberg License included
+with this eBook or online at www.gutenberg.org
+
+1.E.2. If an individual Project Gutenberg-tm electronic work is derived
+from the public domain (does not contain a notice indicating that it is
+posted with permission of the copyright holder), the work can be copied
+and distributed to anyone in the United States without paying any fees
+or charges. If you are redistributing or providing access to a work
+with the phrase "Project Gutenberg" associated with or appearing on the
+work, you must comply either with the requirements of paragraphs 1.E.1
+through 1.E.7 or obtain permission for the use of the work and the
+Project Gutenberg-tm trademark as set forth in paragraphs 1.E.8 or
+1.E.9.
+
+1.E.3. If an individual Project Gutenberg-tm electronic work is posted
+with the permission of the copyright holder, your use and distribution
+must comply with both paragraphs 1.E.1 through 1.E.7 and any additional
+terms imposed by the copyright holder. Additional terms will be linked
+to the Project Gutenberg-tm License for all works posted with the
+permission of the copyright holder found at the beginning of this work.
+
+1.E.4. Do not unlink or detach or remove the full Project Gutenberg-tm
+License terms from this work, or any files containing a part of this
+work or any other work associated with Project Gutenberg-tm.
+
+1.E.5. Do not copy, display, perform, distribute or redistribute this
+electronic work, or any part of this electronic work, without
+prominently displaying the sentence set forth in paragraph 1.E.1 with
+active links or immediate access to the full terms of the Project
+Gutenberg-tm License.
+
+1.E.6. You may convert to and distribute this work in any binary,
+compressed, marked up, nonproprietary or proprietary form, including any
+word processing or hypertext form. However, if you provide access to or
+distribute copies of a Project Gutenberg-tm work in a format other than
+"Plain Vanilla ASCII" or other format used in the official version
+posted on the official Project Gutenberg-tm web site (www.gutenberg.org),
+you must, at no additional cost, fee or expense to the user, provide a
+copy, a means of exporting a copy, or a means of obtaining a copy upon
+request, of the work in its original "Plain Vanilla ASCII" or other
+form. Any alternate format must include the full Project Gutenberg-tm
+License as specified in paragraph 1.E.1.
+
+1.E.7. Do not charge a fee for access to, viewing, displaying,
+performing, copying or distributing any Project Gutenberg-tm works
+unless you comply with paragraph 1.E.8 or 1.E.9.
+
+1.E.8. You may charge a reasonable fee for copies of or providing
+access to or distributing Project Gutenberg-tm electronic works provided
+that
+
+- You pay a royalty fee of 20% of the gross profits you derive from
+ the use of Project Gutenberg-tm works calculated using the method
+ you already use to calculate your applicable taxes. The fee is
+ owed to the owner of the Project Gutenberg-tm trademark, but he
+ has agreed to donate royalties under this paragraph to the
+ Project Gutenberg Literary Archive Foundation. Royalty payments
+ must be paid within 60 days following each date on which you
+ prepare (or are legally required to prepare) your periodic tax
+ returns. Royalty payments should be clearly marked as such and
+ sent to the Project Gutenberg Literary Archive Foundation at the
+ address specified in Section 4, "Information about donations to
+ the Project Gutenberg Literary Archive Foundation."
+
+- You provide a full refund of any money paid by a user who notifies
+ you in writing (or by e-mail) within 30 days of receipt that s/he
+ does not agree to the terms of the full Project Gutenberg-tm
+ License. You must require such a user to return or
+ destroy all copies of the works possessed in a physical medium
+ and discontinue all use of and all access to other copies of
+ Project Gutenberg-tm works.
+
+- You provide, in accordance with paragraph 1.F.3, a full refund of any
+ money paid for a work or a replacement copy, if a defect in the
+ electronic work is discovered and reported to you within 90 days
+ of receipt of the work.
+
+- You comply with all other terms of this agreement for free
+ distribution of Project Gutenberg-tm works.
+
+1.E.9. If you wish to charge a fee or distribute a Project Gutenberg-tm
+electronic work or group of works on different terms than are set
+forth in this agreement, you must obtain permission in writing from
+both the Project Gutenberg Literary Archive Foundation and Michael
+Hart, the owner of the Project Gutenberg-tm trademark. Contact the
+Foundation as set forth in Section 3 below.
+
+1.F.
+
+1.F.1. Project Gutenberg volunteers and employees expend considerable
+effort to identify, do copyright research on, transcribe and proofread
+public domain works in creating the Project Gutenberg-tm
+collection. Despite these efforts, Project Gutenberg-tm electronic
+works, and the medium on which they may be stored, may contain
+"Defects," such as, but not limited to, incomplete, inaccurate or
+corrupt data, transcription errors, a copyright or other intellectual
+property infringement, a defective or damaged disk or other medium, a
+computer virus, or computer codes that damage or cannot be read by
+your equipment.
+
+1.F.2. LIMITED WARRANTY, DISCLAIMER OF DAMAGES - Except for the "Right
+of Replacement or Refund" described in paragraph 1.F.3, the Project
+Gutenberg Literary Archive Foundation, the owner of the Project
+Gutenberg-tm trademark, and any other party distributing a Project
+Gutenberg-tm electronic work under this agreement, disclaim all
+liability to you for damages, costs and expenses, including legal
+fees. YOU AGREE THAT YOU HAVE NO REMEDIES FOR NEGLIGENCE, STRICT
+LIABILITY, BREACH OF WARRANTY OR BREACH OF CONTRACT EXCEPT THOSE
+PROVIDED IN PARAGRAPH F3. YOU AGREE THAT THE FOUNDATION, THE
+TRADEMARK OWNER, AND ANY DISTRIBUTOR UNDER THIS AGREEMENT WILL NOT BE
+LIABLE TO YOU FOR ACTUAL, DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE OR
+INCIDENTAL DAMAGES EVEN IF YOU GIVE NOTICE OF THE POSSIBILITY OF SUCH
+DAMAGE.
+
+1.F.3. LIMITED RIGHT OF REPLACEMENT OR REFUND - If you discover a
+defect in this electronic work within 90 days of receiving it, you can
+receive a refund of the money (if any) you paid for it by sending a
+written explanation to the person you received the work from. If you
+received the work on a physical medium, you must return the medium with
+your written explanation. The person or entity that provided you with
+the defective work may elect to provide a replacement copy in lieu of a
+refund. If you received the work electronically, the person or entity
+providing it to you may choose to give you a second opportunity to
+receive the work electronically in lieu of a refund. If the second copy
+is also defective, you may demand a refund in writing without further
+opportunities to fix the problem.
+
+1.F.4. Except for the limited right of replacement or refund set forth
+in paragraph 1.F.3, this work is provided to you 'AS-IS', WITH NO OTHER
+WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+WARRANTIES OF MERCHANTIBILITY OR FITNESS FOR ANY PURPOSE.
+
+1.F.5. Some states do not allow disclaimers of certain implied
+warranties or the exclusion or limitation of certain types of damages.
+If any disclaimer or limitation set forth in this agreement violates the
+law of the state applicable to this agreement, the agreement shall be
+interpreted to make the maximum disclaimer or limitation permitted by
+the applicable state law. The invalidity or unenforceability of any
+provision of this agreement shall not void the remaining provisions.
+
+1.F.6. INDEMNITY - You agree to indemnify and hold the Foundation, the
+trademark owner, any agent or employee of the Foundation, anyone
+providing copies of Project Gutenberg-tm electronic works in accordance
+with this agreement, and any volunteers associated with the production,
+promotion and distribution of Project Gutenberg-tm electronic works,
+harmless from all liability, costs and expenses, including legal fees,
+that arise directly or indirectly from any of the following which you do
+or cause to occur: (a) distribution of this or any Project Gutenberg-tm
+work, (b) alteration, modification, or additions or deletions to any
+Project Gutenberg-tm work, and (c) any Defect you cause.
+
+
+Section 2. Information about the Mission of Project Gutenberg-tm
+
+Project Gutenberg-tm is synonymous with the free distribution of
+electronic works in formats readable by the widest variety of computers
+including obsolete, old, middle-aged and new computers. It exists
+because of the efforts of hundreds of volunteers and donations from
+people in all walks of life.
+
+Volunteers and financial support to provide volunteers with the
+assistance they need, is critical to reaching Project Gutenberg-tm's
+goals and ensuring that the Project Gutenberg-tm collection will
+remain freely available for generations to come. In 2001, the Project
+Gutenberg Literary Archive Foundation was created to provide a secure
+and permanent future for Project Gutenberg-tm and future generations.
+To learn more about the Project Gutenberg Literary Archive Foundation
+and how your efforts and donations can help, see Sections 3 and 4
+and the Foundation web page at https://www.pglaf.org.
+
+
+Section 3. Information about the Project Gutenberg Literary Archive
+Foundation
+
+The Project Gutenberg Literary Archive Foundation is a non profit
+501(c)(3) educational corporation organized under the laws of the
+state of Mississippi and granted tax exempt status by the Internal
+Revenue Service. The Foundation's EIN or federal tax identification
+number is 64-6221541. Its 501(c)(3) letter is posted at
+https://pglaf.org/fundraising. Contributions to the Project Gutenberg
+Literary Archive Foundation are tax deductible to the full extent
+permitted by U.S. federal laws and your state's laws.
+
+The Foundation's principal office is located at 4557 Melan Dr. S.
+Fairbanks, AK, 99712., but its volunteers and employees are scattered
+throughout numerous locations. Its business office is located at
+809 North 1500 West, Salt Lake City, UT 84116, (801) 596-1887, email
+business@pglaf.org. Email contact links and up to date contact
+information can be found at the Foundation's web site and official
+page at https://pglaf.org
+
+For additional contact information:
+ Dr. Gregory B. Newby
+ Chief Executive and Director
+ gbnewby@pglaf.org
+
+Section 4. Information about Donations to the Project Gutenberg
+Literary Archive Foundation
+
+Project Gutenberg-tm depends upon and cannot survive without wide
+spread public support and donations to carry out its mission of
+increasing the number of public domain and licensed works that can be
+freely distributed in machine readable form accessible by the widest
+array of equipment including outdated equipment. Many small donations
+($1 to $5,000) are particularly important to maintaining tax exempt
+status with the IRS.
+
+The Foundation is committed to complying with the laws regulating
+charities and charitable donations in all 50 states of the United
+States. Compliance requirements are not uniform and it takes a
+considerable effort, much paperwork and many fees to meet and keep up
+with these requirements. We do not solicit donations in locations
+where we have not received written confirmation of compliance. To
+SEND DONATIONS or determine the status of compliance for any
+particular state visit https://pglaf.org
+
+While we cannot and do not solicit contributions from states where we
+have not met the solicitation requirements, we know of no prohibition
+against accepting unsolicited donations from donors in such states who
+approach us with offers to donate.
+
+International donations are gratefully accepted, but we cannot make
+any statements concerning tax treatment of donations received from
+outside the United States. U.S. laws alone swamp our small staff.
+
+Please check the Project Gutenberg Web pages for current donation
+methods and addresses. Donations are accepted in a number of other
+ways including including checks, online payments and credit card
+donations. To donate, please visit: https://pglaf.org/donate
+
+
+Section 5. General Information About Project Gutenberg-tm electronic
+works.
+
+Professor Michael S. Hart was the originator of the Project Gutenberg-tm
+concept of a library of electronic works that could be freely shared
+with anyone. For thirty years, he produced and distributed Project
+Gutenberg-tm eBooks with only a loose network of volunteer support.
+
+Project Gutenberg-tm eBooks are often created from several printed
+editions, all of which are confirmed as Public Domain in the U.S.
+unless a copyright notice is included. Thus, we do not necessarily
+keep eBooks in compliance with any particular paper edition.
+
+Most people start at our Web site which has the main PG search facility:
+
+ https://www.gutenberg.org
+
+This Web site includes information about Project Gutenberg-tm,
+including how to make donations to the Project Gutenberg Literary
+Archive Foundation, how to help produce our new eBooks, and how to
+subscribe to our email newsletter to hear about new eBooks.
+
+*** END: FULL LICENSE ***
+
+
+
+</pre>
+
+</BODY>
+</HTML>
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-23 18:26:44 +0000