公仔箱論壇 - Powered by Discuz! Board

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' f: L/ O) N" x" A( x; [; v
規則
只何用100人搬100塊磚,不能多也不能小...9 K# \" s' g7 I' i# L+ U) z
100人當中有男人、女人同細路仔5.39.217.763 n7 h- x) q0 E s+ f7 E
1個男人搬6塊磚
1女人搬3塊磚5.39.217.76* l- I1 G$ i! R8 j8 W9 e
2個細路仔搬1塊磚
**************************************************************
問搬100塊磚tvb now,tvbnow,bttvb* n5 N' O6 R# z6 `
要幾多男人、女人同細路仔* R) _* n5 s$ ^+ i7 T8 A

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.( j& M2 q' R1 v' E) ]! E( P, i
Let x = Male, y = Female, z = Child$ R9 [# W' B- s& W8 g
6x + 3y + z/2 = 100 Formula 10 ^. J3 L7 u% |5 G
x + y + z = 100 Formula 2
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 4TVBNOW 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 U7 e6 S5 @8 V" k" G; I
Formula 4 can change into 11x + 5y = 100 Formula 5
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.9 p6 D: i- w- \6 e" y9 `1 g
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
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 ; V8 ?9 f9 H0 d) ^$ I
11x + 5y = 100 Formula 5

5.39.217.76/ e. b, d n. o0 e$ x. ?
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
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

歡迎光臨公仔箱論壇 (http://5.39.217.76/)