[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" i% t& g8 T  ~4 p( @& o! r$ M$ J- F
規則  o! U  o$ {; u' U/ i3 t% z0 u
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tvb now,tvbnow,bttvb! X8 t8 L; H& y) B1 {
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6 l  h0 N( G7 X4 G! _: v: ~
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問搬100塊磚
要幾多男人、女人同細路仔
! [# _! b% W; m5 ~5 ?) W$ J" o
答案30號公佈

[ 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 = ChildTVBNOW 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。" k& o) Z3 K1 F; ]; @' J& @' m7 o
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb3 C5 k- N' V. `+ Y( g3 Z8 W
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb2 w7 P2 |& a% r- e+ Z
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.763 [5 ?7 p, \9 _1 `1 I. p! C
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.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。: m% ~0 E5 M0 _2 u. s( B. C
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.# m8 t& V- [) N, G0 G) n4 ^- n
Eventually, the answer is 20 female and 80 children and no male.

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alan1234