公仔箱論壇 - Powered by Discuz! Board

標題: [IQ題] [數學題]100人搬100塊磚 [打印本頁]

作者: 1/5 時間: 2007-10-13 05:08 PM 標題: [數學題]100人搬100塊磚

100人搬100塊磚公仔箱論壇" q6 t. x1 t6 p% h* }. ?4 U
規則
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb7 I8 ^7 u5 a7 W) B& S5 {
100人當中有男人、女人同細路仔/ Y9 h% i( m7 O
1個男人搬6塊磚$ M' K9 \! X* V4 a8 Y, d* |6 F
1女人搬3塊磚
2個細路仔搬1塊磚tvb now,tvbnow,bttvb9 w0 }2 @7 ]+ W
**************************************************************TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。4 N. z; t" f, Z( e7 p- Z
問搬100塊磚
要幾多男人、女人同細路仔TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。! b5 G5 I! s) |9 O" }

答案30號公佈
6 ?; [6 k d) o D' s
[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

作者: twinsdragon 時間: 2007-10-13 05:40 PM

That is a very simple mathematics question.
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2" Z) S4 U i/ M$ g2 Q
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb9 c- m- W$ n) Y
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
Formula 4 can change into 11x + 5y = 100 Formula 55.39.217.76: D9 v: }% |8 W% d4 Z' m0 N9 _# K! N2 M! a
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
And between 0 and 9, only 0 can give me a single number of y. So, x has to be 0 and y have to be 20. Then put x and y back to formula 1, we get z = 80.
Eventually, the answer is 20 female and 80 children and no male.

作者: alan1234 時間: 2007-10-14 12:19 AM 標題: two answers

man,female,children公仔箱論壇, |) `# D4 Y" t
0,20,80 or 5,9,86

作者: RyanC 時間: 2007-10-14 10:46 PM

原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。8 G* B. S3 H; G- X" c+ k! L
11x + 5y = 100 Formula 5

11X must be 0 or multiple of 5tvb now,tvbnow,bttvb* N* A, D) L: Q8 f5 |* ?
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 childrentvb now,tvbnow,bttvb% v0 b6 L8 q3 |" U" O4 u
5 male
9 female

作者: dafunhei123 時間: 2007-10-15 10:39 PM

数学问题，线性代数，我算算再说

作者: dafunhei123 時間: 2007-10-15 10:47 PM

4楼5楼的算对了。看来这里的人也很无聊，线性代数，大学的教材

作者: ghjleo 時間: 2007-10-17 04:23 PM

5,9,84

作者: leou2830 時間: 2007-10-20 10:21 AM

想知道耶

作者: 1/5 時間: 2007-10-30 01:02 AM

答案: 男人女人細路仔
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

歡迎光臨公仔箱論壇 (http://5.39.217.76/)