[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tvb now,tvbnow,bttvb1 Y. C) |. L' |  h
規則* z% e  o, t0 b8 g7 o' |& G  y3 }
只何用100人搬100塊磚,不能多也不能小...公仔箱論壇0 Q  s- g% L0 n- j
100人當中有男人、女人同細路仔公仔箱論壇7 N0 q6 r6 ~  k* i  ^6 E" M
1個男人搬6塊磚
1女人搬3塊磚tvb now,tvbnow,bttvb/ U! ]: s4 f5 v: c: e/ g3 j
2個細路仔搬1塊磚( _( [8 y' U# i; x: X
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問搬100塊磚# ]1 P/ Y3 L' ]) E1 O) X4 Q
要幾多男人、女人同細路仔tvboxnow.com9 @2 b" M9 O  c* _$ ~- q: m
& [( @- {& O3 u! U1 [: z/ G
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。 |& G, M! Z1 ]( K0 n
6x + 3y + z/2 = 100 Formula 14 U, C" O: x4 i* g( \, L4 T2 X$ {
x + y + z = 100 Formula 2+ Y; p) h, C) ?" y1 N8 i
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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。) V5 ]# [, g* q, j _# Y& Z/ n
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvboxnow.com+ o. v/ E! W! i6 P% t1 I
Formula 4 can change into 11x + 5y = 100 Formula 5. Z7 X& h+ M- }' V3 H- x1 n
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., O9 [0 P8 u* u: A7 t
Eventually, the answer is 20 female and 80 children and no male.

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alan1234