[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& i, Q* ?' k* ^ c6 J
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。2 E1 a! \2 o0 l' F# h
100人當中有男人、女人同細路仔6 q6 Z4 N2 H$ ~6 R* O
1個男人搬6塊磚
1女人搬3塊磚
2個細路仔搬1塊磚
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問搬100塊磚
要幾多男人、女人同細路仔5.39.217.764 F- O* s1 e- S
公仔箱論壇( O0 P' |0 l5 }6 B
答案30號公佈6 U, @9 D! @9 d- `
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。' X6 C1 @: a* 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.
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2公仔箱論壇0 U( P: ~8 i. f9 o
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35 x& x2 U. Z* ~
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 43 x V9 O& `% T4 L7 J
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./ a% m# m& Y" G3 Q0 V+ B$ a
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.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。! J6 G9 N+ f/ k3 {4 M* K$ i
Eventually, the answer is 20 female and 80 children and no male.

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alan1234