Board logo

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塊磚公仔箱論壇6 h1 u7 U, Q/ n7 m% Z9 g
規則
" q0 b* k2 J, t9 h- I5.39.217.76只何用100人搬100塊磚,不能多也不能小...
4 E& g) T! m2 |, b5 {" ]4 ]8 e0 D& Z100人當中有男人、女人同細路仔4 F4 j  h3 }9 I  T& s/ R- ]/ A4 p4 a
1個男人搬6塊磚0 R. F/ g# e, h" h+ a7 M/ A: z
1女人搬3塊磚
  J! g& A5 u9 A: M$ I+ `2個細路仔搬1塊磚
3 |3 V, [6 g% Z( q) stvb now,tvbnow,bttvb**************************************************************
+ t5 G; ]- d9 O6 m9 h. Z* j/ k4 I& T2 q問搬100塊磚
# B4 R) D- @9 Y: N, P4 x公仔箱論壇要幾多男人、女人同細路仔; f# u8 j. b* d; @9 x

$ D9 x+ N" u' g6 s9 J* `# ^答案30號公佈; D$ P# i0 d- b$ b. f$ S

, |7 I2 P$ f4 }2 M0 a[ 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.
2 m7 s* {6 a, _" A  A% D2 v! }# q7 h公仔箱論壇Let x = Male, y = Female, z = Child, `- t6 N# D- ~, b$ T
6x + 3y + z/2 = 100   Formula 1
! g+ s. [( W$ I3 T: |' c  p公仔箱論壇x + y + z = 100    Formula 2
( [/ Q9 V2 J" M4 g# USimplify Formula 2 into z, we get z = 100 - x - y Formula 31 a7 X! K# d: L( T; Z3 `
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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。6 A2 }1 e9 y+ K( {
Formula 4 can change into 11x + 5y = 100 Formula 5
2 \* S2 y7 d6 x% J/ p8 D5 m: n公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
$ h. {# y' R$ b& Y' e9 B( ]- eAnd 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.
: R# ^6 F5 J0 t; K/ w0 a% f5.39.217.76Eventually, 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
9 K) l. z6 V6 |* b0 Y, C0,20,80 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
# ^7 {7 ]( x( Z6 X! C4 g0 j0 |5 x+ T11x + 5y = 100 Formula 5
' z0 i; n# T- U: I) U11X must be 0 or multiple of 5公仔箱論壇9 u4 d. c3 N* S- E7 d3 P( z
that meanz x must be 0 or 5
作者: manstein    時間: 2007-10-15 08:28 PM

86 children
- l7 T$ r/ X' h  k+ f5 male 5.39.217.76+ l& T" C# D" v/ G- @
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5.39.217.76+ n9 b9 @; {- S
          5        9       86
作者: fristz    時間: 2007-12-6 10:09 PM

thx4sharing



歡迎光臨 公仔箱論壇 (http://5.39.217.76/) Powered by Discuz! 7.0.0