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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9 t$ e+ B5 z7 m2 i+ z1 X
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb* n2 j4 @, k6 r$ `
100人當中有男人、女人同細路仔4 |3 z& s+ I/ [, l
1個男人搬6塊磚公仔箱論壇; J7 S: M8 k6 b
1女人搬3塊磚
2個細路仔搬1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。- V- {8 N0 k! f( ^
問搬100塊磚
要幾多男人、女人同細路仔
5.39.217.764 n( W4 @3 \& N# q
答案30號公佈" [1 ^1 ^- V. E. ~! k

[ 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.5.39.217.76  W! O3 k7 W9 `$ J1 _- q2 _
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1公仔箱論壇/ O# c: N9 {3 D/ e7 T
x + y + z = 100 Formula 21 N  W: }/ g+ \' G  g
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
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.公仔箱論壇9 T1 T  S6 e* C2 n3 p. y5 G! ^& Y
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.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: H( P5 z* ~# v
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,childrenTVBNOW 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。$ N% A" t( k0 W( K& u
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 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。* P0 Y6 G* M% P" o- K
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 children5.39.217.76* j2 y' h7 Y/ ], M2 w
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: 男人女人細路仔公仔箱論壇% h \, g3 ]. u2 R$ A! d6 l
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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