[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+ U, X! u$ ?/ k. o0 s
只何用100人搬100塊磚,不能多也不能小...; b+ N3 e+ w, q( N! U8 A" I1 p
100人當中有男人、女人同細路仔4 I, G9 s/ \7 ~; g0 V: `
1個男人搬6塊磚
1女人搬3塊磚% C9 Y4 \9 N' T! o" I- {2 m: n
2個細路仔搬1塊磚6 m: G8 S3 i( U
**************************************************************5.39.217.76- \# w* W9 B9 R
問搬100塊磚
要幾多男人、女人同細路仔1 q% L( f" D S* p, u6 h7 k
4 b3 O% H, b+ n" ~" d3 F
答案30號公佈7 U$ ^% w. H; d9 W5 X
" t/ Y, o" u' n0 g; U1 y7 I
[ 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.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。: F% H8 }; Q! u* f. T* O/ `+ @) o
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。' O0 G" l: N5 {/ y( m" a
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2公仔箱論壇2 H: E& f1 w4 ]2 p
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇9 L4 ]; v; h) S6 F" u
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb+ ~4 H+ i1 q3 k
Formula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇0 y1 q" u n ?8 z1 j
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.
Eventually, the answer is 20 female and 80 children and no male.

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alan1234