[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www3.tvboxnow.com  Q; r( {' T$ f, `1 M. C
只何用100人搬100塊磚,不能多也不能小...公仔箱論壇7 a3 f0 d- J/ ?4 S+ L- Y
100人當中有男人、女人同細路仔tvb now,tvbnow,bttvb+ F  P% g7 D$ N: d: e+ S- b
1個男人搬6塊磚
1女人搬3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。  N% `- j* Q  S  C- m" O
2個細路仔搬1塊磚& _; e8 L1 r( h1 G3 D: H
**************************************************************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 j! z! Q* ]2 x: D
問搬100塊磚
要幾多男人、女人同細路仔
www3.tvboxnow.com2 ~- `9 Q; g8 |4 s
答案30號公佈) u! r: g( G, T# i$ m- g7 W' e3 q
公仔箱論壇  J7 v# u* C0 b" S" b  p
[ 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.3 y- l. ^  j8 N. ~0 j# X
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2! I6 Q6 W  V- s8 x
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 4tvb now,tvbnow,bttvb- Q% @  S! S) k- g( t
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb* r/ P  Q4 V& o3 @. V7 O" Y
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.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。0 a; F. J' v; `# _) l% o
Eventually, the answer is 20 female and 80 children and no male.

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alan1234