[IQ題] [數學題]100人搬100塊磚

，描述：問要幾多男人、女人同細路仔

100人搬100塊磚; r; m/ e1 K) E
規則公仔箱論壇8 W) Z8 n9 h# i  M* i* n& z
只何用100人搬100塊磚,不能多也不能小...
100人當中有男人、女人同細路仔
1個男人搬6塊磚公仔箱論壇6 u$ W/ E2 E% X7 Y" m
1女人搬3塊磚
2個細路仔搬1塊磚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。0 q  o* Q9 K1 o# Q8 C; N
**************************************************************
問搬100塊磚0 v9 S/ r0 j  Z3 }. x
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。: ?  p3 ~* w) w, W3 S- S, B
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。2 T# g$ j$ n9 H& d% F- X$ W
答案30號公佈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。" L7 l) I3 S8 m, Z5 y7 ?9 B- H

[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

收藏分享評分

回復引用

訂閱 TOP

twinsdragon

初級武將

Rank: 7 Rank: 7 Rank: 7

2^#

發表於 2007-10-13 05:40 PM | 只看該作者

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 25.39.217.76) b5 n! h) q* b3 t% [
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
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 53 i) |7 m& r1 w8 Y; s
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.公仔箱論壇, |* v5 i/ G {( l& a
Eventually, the answer is 20 female and 80 children and no male.

回復引用

TOP

alan1234