[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tvb now,tvbnow,bttvb8 Z' e7 V3 o, x, @9 x1 x
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。2 u2 P9 V: P9 {* s0 _- Q6 @
1個男人搬6塊磚. P$ z( Z! p- C0 q; e+ ~0 s0 z
1女人搬3塊磚
2個細路仔搬1塊磚5.39.217.77:8898# @2 o1 g* k5 a6 {3 K, q2 r7 P: E& w K
**************************************************************公仔箱論壇2 j; |0 G+ L4 \6 p1 k+ N6 {
問搬100塊磚* I% l4 D: T# I! s9 S' C' k+ x. S
要幾多男人、女人同細路仔

答案30號公佈
- {5 g+ M4 K# K2 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.5.39.217.77:88988 z1 N9 j; y7 \  E. e' j
Let x = Male, y = Female, z = Child% o  r3 i' b, R5 M, e, O& A& c) A
6x + 3y + z/2 = 100 Formula 1* i* n( t5 P" S) Y- u  z
x + y + z = 100 Formula 2TVBNOW 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。4 j0 U3 b% W, W8 N8 ?$ [2 d
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇3 }# l' P6 Y$ @8 A' n  g3 a
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 47 A5 h  }' P3 `( o* F
Formula 4 can change into 11x + 5y = 100 Formula 55 J' ~0 e7 b0 T' o! |* ?8 O- ?
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.' P/ x$ C3 b& h3 H6 [  Y
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.
Eventually, the answer is 20 female and 80 children and no male.

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alan1234