[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
只何用100人搬100塊磚,不能多也不能小...- `- |+ _4 ]7 R6 P. v: _
100人當中有男人、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。+ N' d6 X; C' o4 ?  Z1 {: y
1個男人搬6塊磚5.39.217.776 @; @# c( b  A* T0 X/ K& q% x2 t
1女人搬3塊磚
2個細路仔搬1塊磚" v0 c, w  J. m3 H- N* C6 ~4 H+ W
**************************************************************0 F' ]- Z+ ]7 K" P4 D* D
問搬100塊磚
要幾多男人、女人同細路仔
0 a& z) A* P/ {7 I5 B
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。+ t$ Z( @3 N1 ~/ N
tvb now,tvbnow,bttvb# Z9 f/ k7 K: q# ~
[ 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.
Let x = Male, y = Female, z = Child5.39.217.77! `6 y2 d, s: M7 q, ]
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2
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 5
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb, M3 g% ~; @, A3 g- Y9 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.公仔箱論壇7 Q0 R: P1 n6 I# @& j. c: |
Eventually, the answer is 20 female and 80 children and no male.

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alan1234