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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% k- _. D1 v# y
規則公仔箱論壇- l" Z  {" A  _7 ?3 Z7 U4 n
只何用100人搬100塊磚,不能多也不能小...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 G; b* H% }6 H1 U( h
100人當中有男人、女人同細路仔
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。3 A* Q4 L, ^+ {5 @3 ?
1女人搬3塊磚3 P* ]* d3 F- S0 x2 z# g+ i
2個細路仔搬1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。  I; b2 Y4 p0 r, g  T  e4 Q7 I& J
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問搬100塊磚( d7 W7 `2 N0 Y+ Z, M1 x
要幾多男人、女人同細路仔$ d& A$ K( B, G  H5 r

答案30號公佈6 `# z$ \0 s; n/ t0 @8 U
公仔箱論壇+ H/ r+ s% |; Q, R8 r; Y
[ 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.
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1公仔箱論壇) @3 }) o+ o: t7 R+ v! E
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇. H- Z5 G! f5 j; f* Q% W* n# I
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 5tvb now,tvbnow,bttvb7 s% u! ~# y+ _4 V
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.
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,bttvb. D: m- H3 [% \# [9 x E
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
11x + 5y = 100 Formula 5

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 children, A% a% O% O% h. Z: Y
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: 男人女人細路仔公仔箱論壇% r' N& i' B" }* W4 a" @* U
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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