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標題: [IQ題] [數學題]100人搬100塊磚 [打印本頁]

作者: 1/5 時間: 2007-10-13 05:08 PM 標題: [數學題]100人搬100塊磚

100人搬100塊磚+ K8 E5 C; V+ A& I! I
規則公仔箱論壇  N: f0 Q' ^! m% r, k. W8 t
只何用100人搬100塊磚,不能多也不能小...6 \& f& L6 ]# {2 V( [1 y
100人當中有男人、女人同細路仔公仔箱論壇  e0 U. \5 O7 Z; e$ |
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。4 }9 H9 a- w' \. n- z. o; [
2個細路仔搬1塊磚* u7 P4 J9 F# Z) ^
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問搬100塊磚
要幾多男人、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。2 x* C0 K* p: r2 Z7 z; t+ _+ w

答案30號公佈tvb now,tvbnow,bttvb. \- k6 l# d" v- ]' F  R

[ 本帖最後由 1/5 於 2007-10-13 05:10 PM 編輯 ]

作者: twinsdragon 時間: 2007-10-13 05:40 PM

That is a very simple mathematics question.# l. K& a7 @$ q
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb% q: r+ v5 H( d& F, I6 `3 `1 q5 J
x + y + z = 100 Formula 2- H& G7 y5 @2 }% a1 R
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb7 G$ F6 T( z& V: J y w& Y
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb3 t; h% D- Y+ v8 G/ v( J
Formula 4 can change into 11x + 5y = 100 Formula 5+ W# j/ Y9 L8 u% d- f# @0 W
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb3 M4 Z6 f7 J4 b
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.

作者: alan1234 時間: 2007-10-14 12:19 AM 標題: two answers

man,female,childrentvb now,tvbnow,bttvb5 L; Z, S) I3 K$ {8 L9 p+ S
0,20,80 or 5,9,86

作者: RyanC 時間: 2007-10-14 10:46 PM

原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表
# S! ~7 ]0 M5 p7 o4 k公仔箱論壇11x + 5y = 100 Formula 5

tvb now,tvbnow,bttvb) r1 z7 M+ ~7 z5 | b: S, x0 ]
11X must be 0 or multiple of 5
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children5.39.217.76" ~* L( |4 R( Z3 q: l2 t8 @
5 male
9 female

作者: dafunhei123 時間: 2007-10-15 10:39 PM

数学问题，线性代数，我算算再说

作者: dafunhei123 時間: 2007-10-15 10:47 PM

4楼5楼的算对了。看来这里的人也很无聊，线性代数，大学的教材

作者: ghjleo 時間: 2007-10-17 04:23 PM

5,9,84

作者: leou2830 時間: 2007-10-20 10:21 AM

想知道耶

作者: 1/5 時間: 2007-10-30 01:02 AM

答案: 男人女人細路仔
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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