[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... ?# v' X, u) r0 @+ P
100人當中有男人、女人同細路仔
1個男人搬6塊磚tvb now,tvbnow,bttvb! f: _& ]2 I" c& z
1女人搬3塊磚www2.tvboxnow.com$ ^! g9 s2 A8 S3 l9 `
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。$ V3 }4 T& h/ N7 a, A( U1 s
問搬100塊磚
要幾多男人、女人同細路仔

答案30號公佈; I2 ?' { H4 U$ ~2 t/ E' o
+ O7 n8 Z6 {8 c6 r5 S3 x
[ 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 = Childwww2.tvboxnow.com) a8 [; o! m3 k- G- j% p* L& y
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 42 h& ^' V6 K. j. e( Y: R1 p; v
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.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。& [% d6 P9 O! y5 M
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 = 80.2 h# k) I+ l, d
Eventually, the answer is 20 female and 80 children and no male.

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alan1234