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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5.39.217.77+ o" [) Y" \8 s0 Z& b
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb8 U& ]' i2 C T6 d! S }/ v1 I
100人當中有男人、女人同細路仔
1個男人搬6塊磚
1女人搬3塊磚
2個細路仔搬1塊磚3 {$ w2 K& s# j9 @" ~
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問搬100塊磚
要幾多男人、女人同細路仔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。+ A; }5 |0 J2 U) c1 N. \9 }6 m
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。+ K' p" b/ J: `/ `
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.8 z) k! q7 U M' E3 U, c3 y. h
Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb- ]$ ~/ y/ a( i8 S3 _
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 24 F' h/ [8 C# |5 o
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 41 Z& m7 k. ^% B( Y* A
Formula 4 can change into 11x + 5y = 100 Formula 51 z& D/ Q! |/ E2 k. j! N2 \
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇' u: g3 d- y) V" r
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,children5.39.217.77; D3 ]; d9 |3 N; A
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' D) \7 S. b2 Q$ ^" I5 A
11x + 5y = 100 Formula 5

公仔箱論壇/ A' i3 [8 B) l, 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 childrentvb now,tvbnow,bttvb1 E5 N" a7 Z! c- \9 f. P
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$ S3 `: |1 M1 c' Q) x
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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