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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; I) o4 A" m/ K7 S3 J! x3 N
規則
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5.39.217.76- O2 O, d3 h1 D
1女人搬3塊磚
2個細路仔搬1塊磚
**************************************************************tvb now,tvbnow,bttvb& Y* O ^3 K4 v! B% ^( X2 H
問搬100塊磚
要幾多男人、女人同細路仔8 n2 L) s3 M+ t4 X2 |( \8 G, m
5.39.217.76% E* X% T/ _4 r. _; a" Z
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.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。2 [! _6 {4 s4 y& a3 ^' m5 a% F& q) e# A
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2tvb now,tvbnow,bttvb" K. G/ s& t0 l! A
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0 u) W3 k" [1 \9 ?6 W! j
Formula 4 can change into 11x + 5y = 100 Formula 55.39.217.764 k* K( }" H( j9 g' W; Z$ t
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.
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 7 e* |9 d7 H* T" z
11x + 5y = 100 Formula 5

公仔箱論壇" g5 E! Z' e: O, |( j
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 children5.39.217.76* |5 E" D; w! L: _- T
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2 B+ j4 s" J$ ^! B& h/ A. f
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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