[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。5 t+ A7 p/ q4 l6 C3 I
規則公仔箱論壇4 O' d1 h6 z/ X4 y
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb* W4 {4 p- z9 ?0 v+ D3 H" G d1 V- J
100人當中有男人、女人同細路仔5.39.217.76; B F1 {% b* k, t+ q
1個男人搬6塊磚
1女人搬3塊磚* ?6 G" U' ^; g. _' F
2個細路仔搬1塊磚& I, U" G) d+ n! ?' I, W
**************************************************************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。( a+ Y2 S, q) b
問搬100塊磚5.39.217.769 U; Y; t9 z, H8 _# f3 d* z& |
要幾多男人、女人同細路仔

答案30號公佈5.39.217.763 Y& ^) v/ e+ i. ?# E3 ]. p
公仔箱論壇4 M( J+ f6 [/ f2 ?
[ 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 = Child$ H4 s9 ]* x f7 m3 o& T
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb$ O/ w9 z$ H% s8 H( u& u# Y
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. Z6 y# h9 a: _/ U. `- @
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 = 80.5.39.217.76* k! v) W: |: s0 Y$ _% l
Eventually, the answer is 20 female and 80 children and no male.

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alan1234