[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tvboxnow.com7 U S2 \* \& T1 r* c3 y* U
只何用100人搬100塊磚,不能多也不能小...: N# C4 Z' R) h& r2 {9 x4 Y
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。7 a0 ~) K3 {: N
1個男人搬6塊磚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。: x8 v9 y/ K2 d7 y3 [
1女人搬3塊磚tvboxnow.com) M; o- e/ k4 R8 W
2個細路仔搬1塊磚公仔箱論壇9 m% @* f# c$ m# n/ u: C3 U" D
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問搬100塊磚tvb now,tvbnow,bttvb7 f$ m6 |3 x: @. \: Y$ j
要幾多男人、女人同細路仔

答案30號公佈tvb now,tvbnow,bttvb+ i! t8 w& j4 M
tvboxnow.com5 n# J; f! U* w9 f
[ 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- g7 o0 n5 S7 D
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2" R% z) ]3 |# o2 i) @
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 4tvboxnow.com% ?8 A0 b" m9 h1 h. T
Formula 4 can change into 11x + 5y = 100 Formula 5) p4 c. C; i5 d; d" G- H
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇# l) j2 ^# S9 m/ q+ p: i! c' W4 h0 W
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.tvboxnow.com3 R' ^% ?! ^5 t& i
Eventually, the answer is 20 female and 80 children and no male.

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alan1234