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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tvb now,tvbnow,bttvb; C  Q5 V" L& r& \0 G
只何用100人搬100塊磚,不能多也不能小...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。' X* P% Q8 ]% Q8 h$ }5 x  C
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. |) @' a% v+ U8 q8 g" {
2個細路仔搬1塊磚1 Y7 N" i: [$ J2 f5 k  G
**************************************************************公仔箱論壇( S0 m* Z( Z5 f' ^' r4 T& D
問搬100塊磚公仔箱論壇. r% w$ V- K5 Q
要幾多男人、女人同細路仔公仔箱論壇' {2 `( k) B5 W  G! m
2 W# X; m1 U4 ]2 y7 o# u! P
答案30號公佈/ C6 U) L0 G, u- b1 ]# C# b% ?

[ 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公仔箱論壇4 F4 O# f/ y+ f9 l& D1 U
6x + 3y + z/2 = 100 Formula 1公仔箱論壇- z; f! g! V& k3 _
x + y + z = 100 Formula 2' P2 p+ |* z& Y, y2 k
Simplify Formula 2 into z, we get z = 100 - x - y Formula 30 D- g4 _ o0 ?3 M
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 55.39.217.76( p9 r: u6 [$ l+ X- B, f, {
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.76- z6 s! ]8 p. O, ]: n3 S
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,bttvb9 H6 O: x: i- L
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 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。5 R# C- ?+ c C+ Z
11x + 5y = 100 Formula 5

! h ]4 J- s9 W- V; n& b5 V
11X must be 0 or multiple of 5公仔箱論壇. L* n* c: m7 [8 p0 @4 w$ u
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children: j; g% t5 S9 h0 D
5 male 2 c/ z. W% E0 Z
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. |+ p/ \5 d) C' r, Q
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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