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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1 J. {  Q( @& q$ _  \/ I
規則. ?9 S# O4 `% K. a6 v  Q* {7 L
只何用100人搬100塊磚,不能多也不能小...3 _5 i9 I3 U+ |
100人當中有男人、女人同細路仔
1個男人搬6塊磚
1女人搬3塊磚
2個細路仔搬1塊磚
**************************************************************5.39.217.76+ j+ u8 u$ X3 O  x" Z* \, E
問搬100塊磚5.39.217.761 {4 r- V; M9 O% G+ I
要幾多男人、女人同細路仔

答案30號公佈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。* X- Y# b* ~7 |- ^

[ 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.3 {4 z  d( h0 B: w
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 27 A  g% W+ O0 M. R
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 50 j( t% J" L% {( W
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.) c2 C/ Y2 D& E* x' 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.  y. s& D3 P+ \' _) e/ ?- ]! T
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,children
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 發表公仔箱論壇0 m8 v5 `: z' I* q* |9 S1 H) {5 y8 d
11x + 5y = 100 Formula 5

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。+ S5 [3 ?+ D4 A/ g
11X must be 0 or multiple of 5TVBNOW 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。- b$ E" L Y. m; D
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children2 G' Y( I+ D' U* g0 [
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5.39.217.763 }$ m2 M9 B) m3 G1 Z% @
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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