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
規則公仔箱論壇6 a b% a' r5 u
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2 F1 N9 P* n. c# n* j" X9 V( d3 o
1女人搬3塊磚
2個細路仔搬1塊磚
**************************************************************) L" m* Y8 f5 n) D. L. `- T* A/ d! r
問搬100塊磚5.39.217.769 {, ]1 ]2 u) o* n& A+ J
要幾多男人、女人同細路仔) O, A) U" X1 P

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。3 _2 F. Z. P: h
[ 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,bttvb8 Y1 }4 n# I3 x/ w- o x. f
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 32 |. e8 @# X+ F$ x- {( N
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 48 Q' F' n# e# C, B
Formula 4 can change into 11x + 5y = 100 Formula 55.39.217.76- ~' x/ R( u6 T8 q% C( h
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.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。1 R: r0 D9 {( c" n1 `. U( v, e7 y
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 tvb now,tvbnow,bttvb+ O1 c) Y5 u3 ~- p6 F
11x + 5y = 100 Formula 5

# X: I' x8 V! N
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 公仔箱論壇' \0 k( y; W# Z+ {0 a
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/)