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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
規則
只何用100人搬100塊磚,不能多也不能小...
100人當中有男人、女人同細路仔
1個男人搬6塊磚5.39.217.766 o* m3 }& l: A) E/ G) h6 V2 c
1女人搬3塊磚tvb now,tvbnow,bttvb; }! a, l# A6 j! T( T
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。. q  j, L  z3 \/ _/ {
問搬100塊磚" \/ g4 }* B, @1 K
要幾多男人、女人同細路仔+ N2 |  p. L) m0 M8 Q  D( F
5.39.217.76( g9 o1 ~! D* u  Y$ H* {
答案30號公佈

[ 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.5.39.217.764 O" s" d" I! G/ P: n
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 12 w7 t- P& Z' e- k+ ?' g8 n
x + y + z = 100 Formula 2TVBNOW 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。. ^. g& e- c( \. f Y# R( f
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3( E. I3 x% y: L3 D* J- d w
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 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。# H1 r( ^. z+ x7 I
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.# K- @8 n- k5 E& l+ E- }
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,children" Z _. H# a6 E1 W; d# E2 |
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 5.39.217.76! d3 x+ g8 N+ ~: p$ P4 ~9 j
11x + 5y = 100 Formula 5

5.39.217.760 L e' Z/ K! p
11X must be 0 or multiple of 5/ }& c. I4 R; l$ e
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children5.39.217.762 ^+ ^( c" S. I9 u
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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