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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
規則
只何用100人搬100塊磚,不能多也不能小...8 m1 c# h$ [9 e" W+ b5 Q
100人當中有男人、女人同細路仔
1個男人搬6塊磚1 [4 a6 y4 U5 D' \
1女人搬3塊磚
2個細路仔搬1塊磚
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問搬100塊磚
要幾多男人、女人同細路仔
公仔箱論壇! O4 j0 C5 e7 U+ i. y5 g$ j4 j8 O
答案30號公佈" s& ]% S- d( d3 ^

[ 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 1TVBNOW 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。! `' Z6 e. a3 G D, T. {7 o) ?6 E$ F
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb# k$ o: i4 j. I J+ |
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4) \* T: E2 P( Y5 k0 |
Formula 4 can change into 11x + 5y = 100 Formula 5" c9 p8 Q; T8 F0 [3 F& k
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,childrentvb now,tvbnow,bttvb% W2 l- z- M$ ]6 t9 n. o
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 B& _! n( I+ P+ o8 R
11x + 5y = 100 Formula 5

公仔箱論壇 j0 v% ]& Y; `. o. e
11X must be 0 or multiple of 5tvb now,tvbnow,bttvb' l1 C, D- z1 d% }
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children公仔箱論壇* \7 p0 f0 Q7 ?! s
5 male 5.39.217.77; J7 `4 l; P$ y) q2 B3 F, S
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# _+ e" o' P$ j' y' k f
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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