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页次：6/10
每页50条记录，
本页显示251
到300，
共463
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#跟帖# 回复：四位平方数，前两位和后两位都相同，怎么求？（知道是7744，但怎么推呢？
[脑筋急转] - jinjing(109 bytes )
2010-06-16
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#跟帖# Blue too busy, I try...
[脑筋急转] - jinjing(296 bytes )
2010-06-16
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#跟帖# Here,C(p,0)=0
[脑筋急转] - jinjing(0 bytes )
2010-06-14
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#跟帖# 回复：演变1：任取（不分次序）k个小于等于N的正整数，求其和为M的概率？
[脑筋急转] - jinjing(231 bytes )
2010-06-14
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#跟帖# 直接法也可,原题改成15为佳,20太累人了.
[脑筋急转] - Jinjing(400 bytes )
2010-06-10
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#跟帖# 谢谢您,让我回意起童年,...
[脑筋急转] - jinjing(304 bytes )
2010-06-08
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#跟帖# 0.0026355 is the exact answer,if I do well.
[脑筋急转] - jinjing(221 bytes )
2010-06-08
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#跟帖# $1,$10,$100,换,否则不换.
[脑筋急转] - jinjing(151 bytes )
2010-06-07
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#跟帖# 对不起,我错了,我看成乙班男生比甲班女生多8.
[脑筋急转] - jinjing(0 bytes )
2010-06-07
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#跟帖# 对不起,您最后一题是错的,请注意.
[脑筋急转] - jinjing(48 bytes )
2010-06-07
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#跟帖# 回复：回复：两个牧羊人的难题－－理解一下奥数教育的罪恶与愚昧
[脑筋急转] - jinjing(0 bytes )
2010-06-07
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#跟帖# 回复：两个牧羊人的难题－－理解一下奥数教育的罪恶与愚昧
[脑筋急转] - jinjing(0 bytes )
2010-06-07
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#跟帖# 回复：依次任取7个小于等于10的正整数，求其和为20的概率？
[脑筋急转] - jinjing(317 bytes )
2010-06-07
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#跟帖# 回复：猜帽子的颜色！
[脑筋急转] - jinjing(28 bytes )
2010-06-04
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#跟帖# 回复：72 and 70 - my guess
[脑筋急转] - jinjing(89 bytes )
2010-06-03
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#跟帖# 回复：中国哪个学校的毕业生最腐败?
[脑筋急转] - jinjing(13 bytes )
2010-06-03
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#跟帖# Imposible.
[脑筋急转] - jinjing(98 bytes )
2010-06-01
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#跟帖# i^4=1,i^8=1,...,i^4n=1,If think about complex number.
[脑筋急转] - jinjing(15 bytes )
2010-06-01
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#跟帖# The answer only for 7 families.n families is (n-1)/(7n-1)
[脑筋急转] - jinjing(24 bytes )
2010-06-01
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#跟帖# If m boys and n girls,answer is (m-1)/(m+n-1)
[脑筋急转] - jinjing(42 bytes )
2010-05-30
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#跟帖# You and I are wrong
[脑筋急转] - jinjing(0 bytes )
2010-05-29
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#跟帖# Kmm smart,007 tricky,they are important for us.
[脑筋急转] - jinjing(260 bytes )
2010-05-29
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#跟帖# 13/27
[脑筋急转] - jinjing(30 bytes )
2010-05-28
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#跟帖# 1/13
[脑筋急转] - jinjing(38 bytes )
2010-05-28
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#跟帖# If you don't know the order the answer is 1/3
[脑筋急转] - jinjing(206 bytes )
2010-05-28
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#跟帖# You want to creat a new fuzzy, or fussy Math.?
[脑筋急转] - jinjing(16 bytes )
2010-05-28
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#跟帖# If you are right,it shoul be from real data.P(b)=13/27
[脑筋急转] - jinjing(122 bytes )
2010-05-27
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#跟帖# All the same.I think.
[脑筋急转] - jinjing(0 bytes )
2010-05-26
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#跟帖# I,m wrong,007 win
[脑筋急转] - jinjing(0 bytes )
2010-05-26
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#跟帖# near (400/Pi)*li, You are right.
[脑筋急转] - jinjing(126 bytes )
2010-05-26
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#跟帖# It May be near 200 li. (r/R)*100+100
[脑筋急转] - jinjing(0 bytes )
2010-05-26
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#跟帖# Near 100 li.
[脑筋急转] - jinjing(99 bytes )
2010-05-26
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#跟帖# 回复：algebra 2 question!!
[脑筋急转] - jinjing(136 bytes )
2010-05-24
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#跟帖# 回复：Are there any consecutive unit fractions that....
[脑筋急转] - jinjing(176 bytes )
2010-05-20
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#跟帖# 回复：The answer is ((A-C)(B-C))/C
[脑筋急转] - jinjing(74 bytes )
2010-05-18
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#跟帖# 回复：来个简单的：校对问题
[脑筋急转] - jinjing(24 bytes )
2010-05-18
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#跟帖# 回复：no - ANSWER to this question is yes, (4.60338811)
[脑筋急转] - jinjing(243 bytes )
2010-05-17
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#跟帖# 鸭在半径为x 的圆上与狐周旋于同一直径远端，不可能.
[脑筋急转] - jinjing(170 bytes )
2010-05-14
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#跟帖# 狐狸在岸上跑的速度是鸭子速度的4倍.not 4.6倍
[脑筋急转] - jinjing(276 bytes )
2010-05-14
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#跟帖# 什么最大圈绕至同径最远点,切线到岸,不知所云.
[脑筋急转] - Jinjing(77 bytes )
2010-05-13
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#跟帖# 回复：It can be proven that there is an infinite amount of prime nu
[脑筋急转] - jinjing(275 bytes )
2010-05-13
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#跟帖# 题应改为:为什么有时热水（开水）比冷水结冰快
[脑筋急转] - Jinjing(0 bytes )
2010-05-13
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#跟帖# 回复：我就这么答
[脑筋急转] - jinjing(101 bytes )
2010-05-11
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#跟帖# 回复：回复：质数的穷尽
[脑筋急转] - jinjing(48 bytes )
2010-05-11
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#跟帖# You want to peep?
[脑筋急转] - jinjing(0 bytes )
2010-05-11
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#跟帖# 1)x=2,F(75)=237.5,x=1,F(50)=125,x=.8,F(38)=110.2)x=2,F(75)=248.7
[脑筋急转] - Jinjing(111 bytes )
2010-05-10
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#跟帖# you are right in math,but the poor duck has to swim a lot of cir
[脑筋急转] - jinjing(44 bytes )
2010-05-10
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#跟帖# F(y)=[100xy+(100-y)(x*y+100)+(100-y)/2]/100,y=(100x-100)/2x
[脑筋急转] - jinjing(42 bytes )
2010-05-10
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#跟帖# 回复：鸭子在r/4半径的圆上可保持与狐狸在同一直径而在中心两侧。
[脑筋急转] - jinjing(47 bytes )
2010-05-09
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#跟帖# 回复：just delete that sentence
[脑筋急转] - jinjing(393 bytes )
2010-05-09
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页次：6/10
每页50条记录，
本页显示251
到300，
共463
分页：
[<<]
[上一页]
[6]
[7]
[8]
[9]
[10]
[下一页]
[首页]
[尾页]
|
| 备份档案：
当前
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| 2022
| 2021
| 2020
| 2019
| 2018
| 2017
| 2016
| 2015
| 2014
| 2013
| 2012
| 2011
| 2010
| 2009
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| 2004
| 2003
|