[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os.tvboxnow.com" [  O0 S6 X2 z8 [  }% W( ]
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只何用100人搬100塊磚,不能多也不能小...) y! H, ~% Q/ C- ]3 T; N! ^$ \. X$ U
100人當中有男人、女人同細路仔os.tvboxnow.com+ e1 k! R) l  Z# w$ X4 W
1個男人搬6塊磚
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。# [" o( h+ \  m# c: ^/ e
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問搬100塊磚
要幾多男人、女人同細路仔tvb now,tvbnow,bttvb" k) J- t0 Y0 g

答案30號公佈

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

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twinsdragon

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發表於 2007-10-13 05:40 PM | 只看該作者

That is a very simple mathematics question.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。: O4 h7 G, i- y/ u" y% l' a; }
Let x = Male, y = Female, z = Child公仔箱論壇& H5 x7 Z( K4 Q
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 29 [" O& R7 ]7 v& e
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3: C% B5 m! J" G+ m
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇1 }% t' X% l# T! g x
Formula 4 can change into 11x + 5y = 100 Formula 5TVBNOW 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。" g, @$ {6 H5 W" U6 ^( t
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb8 A8 K8 y( F9 D& ~! U! x1 r% [
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.

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alan1234