我用的是 office 2003, 除第一列外,其余列的公式是 a^3 = b b+23 = c c/24 = d int(d) = e if(d=e, a, 0) = f ( 用了 conditional formatting 标颜色) 最后是 countif(f1:100, "<>0") = total (f101) 1,25,49,73,97 www.ddhw.com | 1 | 1 | 24 | 1 | 1 | 1 | 2 | 8 | 31 | 1.291667 | 1 | 0 | 3 | 27 | 50 | 2.083333 | 2 | 0 | 4 | 64 | 87 | 3.625 | 3 | 0 | 5 | 125 | 148 | 6.166667 | 6 | 0 | 6 | 216 | 239 | 9.958333 | 9 | 0 | 7 | 343 | 366 | 15.25 | 15 | 0 | 8 | 512 | 535 | 22.29167 | 22 | 0 | 9 | 729 | 752 | 31.33333 | 31 | 0 | 10 | 1000 | 1023 | 42.625 | 42 | 0 | 11 | 1331 | 1354 | 56.41667 | 56 | 0 | 12 | 1728 | 1751 | 72.95833 | 72 | 0 | 13 | 2197 | 2220 | 92.5 | 92 | 0 | 14 | 2744 | 2767 | 115.2917 | 115 | 0 | 15 | 3375 | 3398 | 141.5833 | 141 | 0 | 16 | 4096 | 4119 | 171.625 | 171 | 0 | 17 | 4913 | 4936 | 205.6667 | 205 | 0 | 18 | 5832 | 5855 | 243.9583 | 243 | 0 | 19 | 6859 | 6882 | 286.75 | 286 | 0 | 20 | 8000 | 8023 | 334.2917 | 334 | 0 | 21 | 9261 | 9284 | 386.8333 | 386 | 0 | 22 | 10648 | 10671 | 444.625 | 444 | 0 | 23 | 12167 | 12190 | 507.9167 | 507 | 0 | 24 | 13824 | 13847 | 576.9583 | 576 | 0 | 25 | 15625 | 15648 | 652 | 652 | 25 | 26 | 17576 | 17599 | 733.2917 | 733 | 0 | 27 | 19683 | 19706 | 821.0833 | 821 | 0 | 28 | 21952 | 21975 | 915.625 | 915 | 0 | 29 | 24389 | 24412 | 1017.167 | 1017 | 0 | 30 | 27000 | 27023 | 1125.958 | 1125 | 0 | 31 | 29791 | 29814 | 1242.25 | 1242 | 0 | 32 | 32768 | 32791 | 1366.292 | 1366 | 0 | 33 | 35937 | 35960 | 1498.333 | 1498 | 0 | 34 | 39304 | 39327 | 1638.625 | 1638 | 0 | 35 | 42875 | 42898 | 1787.417 | 1787 | 0 | 36 | 46656 | 46679 | 1944.958 | 1944 | 0 | 37 | 50653 | 50676 | 2111.5 | 2111 | 0 | 38 | 54872 | 54895 | 2287.292 | 2287 | 0 | 39 | 59319 | 59342 | 2472.583 | 2472 | 0 | 40 | 64000 | 64023 | 2667.625 | 2667 | 0 | 41 | 68921 | 68944 | 2872.667 | 2872 | 0 | 42 | 74088 | 74111 | 3087.958 | 3087 | 0 | 43 | 79507 | 79530 | 3313.75 | 3313 | 0 | 44 | 85184 | 85207 | 3550.292 | 3550 | 0 | 45 | 91125 | 91148 | 3797.833 | 3797 | 0 | 46 | 97336 | 97359 | 4056.625 | 4056 |
作者: huxlnn 时间: 2006-7-4 17:20
标题: LH,PF[:-Q][:-Q][:-Q]答案就是5个
LH,PF 答案就是5个
作者: 有空想想 时间: 2006-7-5 20:25
标题: what are LH and PF? [:>]
what are LH and PF?
作者: husonghu 时间: 2006-7-6 06:05
标题: LH=厉害;PF=佩服 [:-D]
LH=厉害;PF=佩服
作者: 有空想想 时间: 2006-7-6 16:15
标题: 谢[@};-]谢!英文的 acronyms 就够让人头痛了,汉语拼音的又来了[:((]
谢 谢!英文的 acronyms 就够让人头痛了,汉语拼音的又来了
作者: ABCD 时间: 2006-7-16 23:41
标题: 前计算机时代的答案
a^3+23=24m => a^3-1=24(m-1) a^3-1=(a-1)(a^2+a+1)=24n=3*2^3n since (a^2+a+1) 必是一个奇数,并且如果a^2+a+1能被3整除的话,a-1必同时能被3整除 (substitute a=3m,3m-1,3m-2,...) therefore a^3+23能被24整除 <=> (a-1)能被24整除.... => a-1=0,24,48,72,96
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作者: huxlnn 时间: 2006-7-17 09:57
标题: 回复:前计算机时代的答案
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