[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,bttvb$ K/ }$ ?# }, n: O
規則公仔箱論壇, Y3 t4 `: @8 H. n( q
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
1個男人搬6塊磚# S1 @& I, L8 ]; M8 X7 J* b
1女人搬3塊磚tvb now,tvbnow,bttvb6 V$ N. J1 G y7 e: ~& a
2個細路仔搬1塊磚
**************************************************************7 c2 b+ A! D0 G8 V
問搬100塊磚
要幾多男人、女人同細路仔8 E0 ^% x- W, ?# s* t3 q6 I

答案30號公佈% Z$ |* k# W* h9 ]* e- x, y7 D
tvb now,tvbnow,bttvb1 ]" D2 ~9 z0 A( k
[ 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.tvb now,tvbnow,bttvb" ~' B/ [' Y0 ]3 L0 G9 n1 r d* K" T
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。6 m8 m5 d4 v( ]- F2 a
6x + 3y + z/2 = 100 Formula 1公仔箱論壇- ] ^4 y- ?+ G) M1 }
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
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。2 ^, d, X- v! l, a+ O0 o8 S3 v' [
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 = 80.5.39.217.76. S; [# t8 G3 D$ {
Eventually, the answer is 20 female and 80 children and no male.

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alan1234