[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5 a8 Z- c m' B
規則公仔箱論壇3 X+ ~( _' \7 `
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。9 A" N. v: j5 D& D3 A
1個男人搬6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。( L, _3 p1 z9 v3 b
1女人搬3塊磚
2個細路仔搬1塊磚1 w% q, b( T3 Z+ P6 z3 k1 _
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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: N+ Y# X( ~1 w% V3 v( w* `0 s
5.39.217.76& N6 U4 @% Y' _/ Y6 Y5 y
[ 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 = Child公仔箱論壇/ l5 f+ y1 Y4 e# k! ^
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 45.39.217.76! K! v& L% V! B5 J" x7 J) h
Formula 4 can change into 11x + 5y = 100 Formula 50 X$ s- E' B# B' W, j: j6 H ]' q
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 = 80.5.39.217.76/ ^) U' r; u0 p# Q# @
Eventually, the answer is 20 female and 80 children and no male.

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alan1234