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, q9 D: I" W. R$ P1 g
規則公仔箱論壇) u; Y5 c( o7 L) ^
只何用100人搬100塊磚,不能多也不能小...公仔箱論壇+ g6 X% y7 q# h. q, d; N
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
**************************************************************
問搬100塊磚
要幾多男人、女人同細路仔

答案30號公佈
公仔箱論壇# C: G3 |, v5 _2 X
[ 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 = Childtvb now,tvbnow,bttvb# k! X: W9 Y- W! l& l6 P
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2公仔箱論壇; m5 j: e. z. }, c4 ?% b# v
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 41 z: K& F8 N1 R m2 C" E$ _
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.公仔箱論壇$ v7 @* {) ?1 m) p+ p' 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,childrentvb now,tvbnow,bttvb' H4 t3 H5 y# _+ [; e! a
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5 J0 m9 Y4 B- W- s8 W I! s
11x + 5y = 100 Formula 5

11X must be 0 or multiple of 55.39.217.76& K) N% R* X& J- @5 L
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 Y2 l' b( v1 I+ u, ~
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/)