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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
3 x, \! R/ E8 G3 K: J公仔箱論壇規則* E) V( n+ X9 y; l
只何用100人搬100塊磚,不能多也不能小...
" D; }- N( O! ]% G; ?: t公仔箱論壇100人當中有男人、女人同細路仔
3 J9 `$ Z8 B2 N1個男人搬6塊磚9 M& ~* l2 X+ h" D
1女人搬3塊磚tvb now,tvbnow,bttvb, H' C' }3 D' p2 X
2個細路仔搬1塊磚5.39.217.76$ S; I$ H% m6 r
**************************************************************tvb now,tvbnow,bttvb) [. k2 ?. \" D6 a% [
問搬100塊磚
% g) j  u( G. z! g4 [3 W; o要幾多男人、女人同細路仔
8 S, ]2 R  G, x/ O- v1 |# R% h- Utvb now,tvbnow,bttvb5.39.217.76: l* }- F+ S+ [; E# r7 G
答案30號公佈
  {' V* P- p2 C+ |; S' W公仔箱論壇  a6 c8 H% _) S6 s% Q  y
[ 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.
4 M+ O* Y, z; W; K. Q) h5.39.217.76Let x = Male, y = Female, z = Child
! f% @* H% N8 E. l6 |2 t  z' {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。6x + 3y + z/2 = 100   Formula 18 o" Z/ J* u; `) g1 K" ~# k
x + y + z = 100    Formula 25.39.217.76: H! Z4 A/ Q( B4 D7 T. i
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3, h) n5 m2 I+ a$ X
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
: \9 |3 ^" |; H. W! _公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5/ p" Q6 d8 B9 L( `
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want., A/ x9 o6 c4 v+ r* P
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.
, \$ N! J. q# e' ZEventually, 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公仔箱論壇; W7 [# M3 V/ L6 Y8 E2 Y
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 ( g1 f& T1 V9 V1 z& C6 G
11x + 5y = 100 Formula 5
公仔箱論壇. \4 A) `8 v( Z0 x& K
11X must be 0 or multiple of 5
$ O& \( M! z% U0 k" K5.39.217.76that meanz x must be 0 or 5
作者: manstein    時間: 2007-10-15 08:28 PM

86 children
7 \2 u+ \" ~4 ?0 v) |5 male
4 N4 j: n2 I  i4 D( _" c0 j公仔箱論壇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
3 f$ [" _& x6 gtvb now,tvbnow,bttvb          5        9       86
作者: fristz    時間: 2007-12-6 10:09 PM

thx4sharing



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