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页次：2/4
每页50条记录，
本页显示51
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共190
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#跟帖# 拉马努金是真天才,凭直觉发现公式,可惜他用功过度折寿了.我见过华老,他很
[脑筋急转] - jinjing(97 bytes )
2012-08-06
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#跟帖# http://bbs.wenxuecity.com/netiq/133187.html
[脑筋急转] - jinjing(0 bytes )
2012-08-06
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#跟帖# 数学专业,70多岁老玩童.我去年贴子您可看一下. http://bbs.wenxuecity.com/netiq/133187.
[脑筋急转] - jinjing(0 bytes )
2012-08-06
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#跟帖# For kids : 31415925/10000000=1256637/4000000
[脑筋急转] - jinjing(0 bytes )
2012-08-04
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#跟帖# By numer theory should be 3/1.22/7, 333/106,355/113,103993/33102
[脑筋急转] - jinjing(0 bytes )
2012-08-04
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#跟帖# 不对啊．
[脑筋急转] - jinjing(0 bytes )
2012-07-17
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#跟帖# Ｌｅｉｂｎｉｚ＇ Ｔｅｓｔ．
[脑筋急转] - jinjing(0 bytes )
2012-07-16
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#跟帖# 我以为您是文科生．某些函数不动点可用此法．最佳逼进很快．
[脑筋急转] - jinjing(35 bytes )
2012-07-15
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#跟帖# 回复：请具体说说你的方法
[脑筋急转] - jinjing(330 bytes )
2012-07-15
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#跟帖# 回复：求方程x-cos(x)=0精确到小数点后九位的近似根，只准使用不能编程序的计算器
[脑筋急转] - jinjing(59 bytes )
2012-07-14
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#跟帖# 很好,...,加一说明更好: m mod m=m. ...
[脑筋急转] - jinjing(0 bytes )
2012-07-11
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#跟帖# 回复：= 3 * sqrt(3)
[脑筋急转] - jinjing(17 bytes )
2012-06-26
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#跟帖# should be f(m+1)=7+f(m)-(m+1)*[(6+f(m))/(m+1)],f(25)=15.
[脑筋急转] - jinjing(0 bytes )
2012-06-23
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#跟帖# m>7. f(m) : last number for m. f(1)=1,f(2)=2,...,f(7)=5, ...,
[脑筋急转] - jinjing(98 bytes )
2012-06-21
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#跟帖# Recursive formula : f(m+1)=7+f(m)-(m+1)*[(7+f(m))/(m+1)]
[脑筋急转] - jinjing(51 bytes )
2012-06-21
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#跟帖# 15
[脑筋急转] - jinjing(0 bytes )
2012-06-19
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#跟帖# 不谢,有一气呵成的解法.一方程可也.但是脑要灵.
[脑筋急转] - jinjing(102 bytes )
2012-06-01
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#跟帖# 回复：回复：回复：几何题
[脑筋急转] - jinjing(149 bytes )
2012-05-31
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#跟帖# 回复：几何题
[脑筋急转] - jinjing(27 bytes )
2012-05-31
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#跟帖# you are too pure,...,two exampes were said something else...
[脑筋急转] - jinjing(0 bytes )
2012-05-24
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#跟帖# 密码841=密码29*29=密码C^2=密码王......SO,...
[脑筋急转] - jinjing(85 bytes )
2012-05-24
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#跟帖# 7958=2*23*173=BＷＱ =BEST ＷＥＢ ＱＵＥＳＴＩＯＮ．
[脑筋急转] - jinjing(33 bytes )
2012-05-23
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#跟帖# 太自信的老顽固.错的概率就大.
[脑筋急转] - jinjing(0 bytes )
2012-05-16
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#跟帖# thx. very sad. all together 6 for 1.so only 10. I'm wrong.70 is
[脑筋急转] - jinjing(0 bytes )
2012-05-14
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#跟帖# 0.种无图.您用java,c++check again.CP sometime is ...
[脑筋急转] - jinjing(0 bytes )
2012-05-14
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#跟帖# 开个玩笑才热闹.
[脑筋急转] - jinjing(0 bytes )
2012-05-14
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#跟帖# programming should be following Math. I'll put some cases you lo
[脑筋急转] - jinjing(0 bytes )
2012-05-14
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#跟帖# 120是答案,请告我题出处.应去改正.我错的概率不大.
[脑筋急转] - jinjing(246 bytes )
2012-05-14
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#跟帖# 我都七十多了,竞什么标.防老而已.本题有过程.是同构.6人每人打三次.
[脑筋急转] - jinjing(203 bytes )
2012-05-13
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#跟帖# 数学答案只有对错,不分地方.
[脑筋急转] - jinjing(0 bytes )
2012-05-12
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#跟帖# 60....6人坐圆桌,邻不打,其余打,5!/2=60.我又忘了2,与换书不同.
[脑筋急转] - jinjing(23 bytes )
2012-05-12
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#跟帖# 回复：又一道有趣的数学题
[脑筋急转] - jinjing(11 bytes )
2012-05-11
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#跟帖# 6/11=.545=.55=.6=60分.
[脑筋急转] - jinjing(0 bytes )
2012-05-09
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#跟帖# 1,田.2,亩.3,由.,甲,申.4,相.5,6,米.7,泃.8,二.9,闩.10,二.11,各...60分?
[脑筋急转] - jinjing(0 bytes )
2012-05-08
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#跟帖# ... {[C(N, n1)C(N-n1,n2)..C(N-n1-n2-...n(k-1,nk)/D(n1,n2m,,,nk)]
[脑筋急转] - jinjing(0 bytes )
2012-05-06
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#跟帖# F(N) = SUM_(n1 + n2 + ... nk=N, ni >=3 ) {[C(N, n1)C(N-n1,n2)..
[脑筋急转] - jinjing(66 bytes )
2012-05-06
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#跟帖# 回复：If the total people is 7, what is the number of 3+4 part? Is
[脑筋急转] - jinjing(120 bytes )
2012-05-05
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#跟帖# If two people can exchange each other.the answer is 265 cases.
[脑筋急转] - jinjing(0 bytes )
2012-05-04
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#跟帖# You are right, should be C(6,3)/2*2*2 + 6!/6=160. two parts 10 c
[脑筋急转] - jinjing(96 bytes )
2012-05-04
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#跟帖# 回复：回复：Yes, I think C(6,3)*2*2+6!/6=200..
[脑筋急转] - jinjing(360 bytes )
2012-05-04
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#跟帖# Yes, I think C(6,3)*2*2+6!/6=200..
[脑筋急转] - jinjing(320 bytes )
2012-05-04
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#跟帖# I think C(6,3)*2*2+6!/6=200..
[脑筋急转] - jinjing(0 bytes )
2012-05-04
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#跟帖# 您的题比原题好.
[脑筋急转] - jinjing(0 bytes )
2012-05-03
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#跟帖# 欢迎光临,这里人讲道理.回坛糊涂人太多.
[脑筋急转] - jinjing(0 bytes )
2012-05-02
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#跟帖# 1428570
[脑筋急转] - jinjing(0 bytes )
2012-05-02
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#跟帖# 17 !/ (i^3-1), i=2,3,...,15,16.
[脑筋急转] - jinjing(0 bytes )
2012-04-25
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#跟帖# 您可改2003为2012....(2012,16)=4,...有4组解.
[脑筋急转] - jinjing(59 bytes )
2012-04-24
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#跟帖# 几十年前,读过"数论导引",有两条定理,证明较长.现简叙如下:
[脑筋急转] - jinjing(265 bytes )
2012-04-24
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#跟帖# 回复：What is relation? your 1 to 6 is just my proof. my 2011/2 out
[脑筋急转] - jinjing(0 bytes )
2012-04-24
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#跟帖# 不敢当,
[脑筋急转] - jinjing(0 bytes )
2012-04-23
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页次：2/4
每页50条记录，
本页显示51
到100，
共190
分页：
[上一页]
[1]
[2]
[3]
[4]
[下一页]
[首页]
[尾页]
|
| 备份档案：
当前
| 2023
| 2022
| 2021
| 2020
| 2019
| 2018
| 2017
| 2016
| 2015
| 2014
| 2013
| 2012
| 2011
| 2010
| 2009
| 2008
| 2007
| 2006
| 2005
| 2004
| 2003
|