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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tvb now,tvbnow,bttvb6 h/ t* N+ H2 W) k% \
規則
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb# G! Y$ A/ a n/ J
100人當中有男人、女人同細路仔
1個男人搬6塊磚0 K( _8 l9 u0 R5 @# Z& |* e
1女人搬3塊磚
2個細路仔搬1塊磚6 [1 _& [! s* I1 N
**************************************************************tvb now,tvbnow,bttvb7 K3 i8 [; y7 h6 q1 \+ l+ I
問搬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。& i# F8 b' w! ]8 O4 b/ f. _
要幾多男人、女人同細路仔

答案30號公佈
tvb now,tvbnow,bttvb: p+ H3 |7 M1 S. a- [
[ 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 = Child
6x + 3y + z/2 = 100 Formula 15.39.217.779 i. G. M* M" p; v* f9 k/ e
x + y + z = 100 Formula 2" T4 b' `3 U) x; W7 [
Simplify Formula 2 into z, we get z = 100 - x - y Formula 32 }! \9 I" G$ ]6 n4 n+ x4 ]; O
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 5
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.tvb now,tvbnow,bttvb1 S9 J3 |0 q6 Q, H: W3 u
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 5.39.217.77, `5 z0 i$ s! H- g9 o* i- o& o
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 children8 T4 {$ W3 J+ s3 ?3 O
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, H7 O$ F- F" c2 M
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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