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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。+ s! g8 M* k# `" d* q* d
規則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。& M) w2 V7 |& u# ~( N* {6 t
只何用100人搬100塊磚,不能多也不能小...5.39.217.763 q- F5 u. `+ W
100人當中有男人、女人同細路仔tvb now,tvbnow,bttvb9 j9 k* l( e* B& l
1個男人搬6塊磚5.39.217.76' F* g# _$ U$ J3 n1 }) G% d
1女人搬3塊磚5.39.217.76- n7 ? }* @! S. j' l+ N
2個細路仔搬1塊磚
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問搬100塊磚tvb now,tvbnow,bttvb" j, p( r- R5 T
要幾多男人、女人同細路仔

答案30號公佈! t& [; ~; |5 i% Z! G
公仔箱論壇0 r* K( s. e- S' e0 C& S
[ 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 k" |6 i6 B* r% z2 ^# N( F
Let x = Male, y = Female, z = Child5.39.217.769 n' }! \# y2 Q: [) i4 D
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 3
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇8 p( G4 x" U# @$ n6 u
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.tvb now,tvbnow,bttvb: X0 g6 b" H. S. {: \# V' M
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.. U1 C/ e. F( R: m6 e6 S- ~; Y- D
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# m4 }7 E+ Y8 ^$ y
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 . ?# @/ g1 w& A/ p2 B5 C) b1 [$ q
11x + 5y = 100 Formula 5

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 childrentvb now,tvbnow,bttvb8 D( o! w% z" m
5 male 2 Z3 ^% j9 |6 u- m( h
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5.39.217.76- W, ]) A% Y' Q3 L4 g5 J# l
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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