[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
規則公仔箱論壇6 @# P$ P- P' Z" b( Y8 h2 M: @/ g
只何用100人搬100塊磚,不能多也不能小...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。% V5 x/ k. b$ }8 F2 A ?0 r; |
100人當中有男人、女人同細路仔公仔箱論壇3 l, j( G1 D" P! {. u6 a
1個男人搬6塊磚
1女人搬3塊磚
2個細路仔搬1塊磚公仔箱論壇 d7 O" c3 g/ \% H7 S
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問搬100塊磚
要幾多男人、女人同細路仔

答案30號公佈tvb now,tvbnow,bttvb/ ?1 X1 F/ @( X
os.tvboxnow.com. [5 V5 D5 }; e* E
[ 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.os.tvboxnow.com. W/ }0 h/ h2 D- G0 N/ ~, K
Let x = Male, y = Female, z = Child% ?; I9 {9 c/ H) j! _) h* t1 _- v
6x + 3y + z/2 = 100 Formula 1TVBNOW 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 {0 s" D. N. R8 K( S0 h
x + y + z = 100 Formula 2os.tvboxnow.com3 b- m7 c0 g3 p+ g
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb8 q! C& f ?4 N2 x1 V
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 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。/ y8 I4 L0 _! Y, ~4 }: |
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want." Q6 R W9 @4 t% j
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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