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tvb now,tvbnow,bttvb( ]2 |$ l2 r9 w% ~* \3 }+ T# m+ W
規則tvb now,tvbnow,bttvb6 W' H/ m7 X+ v, U0 J0 E6 X" v
只何用100人搬100塊磚,不能多也不能小...tvb now,tvbnow,bttvb' h" w7 m6 q7 d4 \
100人當中有男人、女人同細路仔公仔箱論壇# Z, J1 k. r$ |- J3 r( T# T
1個男人搬6塊磚
2 J% p, u; }: b1 T/ R2 oTVBNOW 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。1女人搬3塊磚5.39.217.76% y- k# q( m, |8 Z; i2 y4 k
2個細路仔搬1塊磚
3 T0 A# F7 D3 \**************************************************************
( h/ {9 [" a% U1 M" V" A! ]5.39.217.76問搬100塊磚
& X2 v0 O) x6 o, a  m" k2 S! ETVBNOW 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。要幾多男人、女人同細路仔公仔箱論壇. c8 \- \/ Y0 |
, d6 ^/ N3 T  g9 G$ u7 l- [  s: k+ A
答案30號公佈
5 l# z$ v" k" B1 P  X, c8 w1 z: rtvb now,tvbnow,bttvbtvb now,tvbnow,bttvb' r! m* r; ^& _# x
[ 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.公仔箱論壇. g0 p3 j, G& `, w  z
Let x = Male, y = Female, z = Child
" M( h4 m; _  ~- \! `: r! _* N6x + 3y + z/2 = 100   Formula 1公仔箱論壇) p- S4 G+ {- o# k7 @. m8 b! `
x + y + z = 100    Formula 2
" }/ X' N, V" T9 L) @9 A  i5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3
! b( D3 Z- D& w, B: H5 _2 g5.39.217.76Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb: f/ N! u4 o- Q
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb" l6 G. S$ D& U+ W8 H: D+ z, q
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
* L' x" k/ _& W8 c$ t+ Q1 G公仔箱論壇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 = 80.1 l2 ]3 ^/ o1 p3 x
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,childrentvb now,tvbnow,bttvb0 \# y( [( E- B# u8 q1 d7 }2 h
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
7 k: y# m) N- g1 z) |! Q; Q/ `11x + 5y = 100 Formula 5
) L, X' ^1 c: P5 b) R/ D
11X must be 0 or multiple of 5
' N4 U7 C6 N! g7 G; J6 P* ~  o公仔箱論壇that meanz x must be 0 or 5
作者: manstein    時間: 2007-10-15 08:28 PM

86 children% [0 ~  d% P6 v' K4 w6 x0 b
5 male 5.39.217.76( h; X3 W$ u( L1 C- [7 [: c
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tvb now,tvbnow,bttvb+ u0 t: B7 H  h0 ]% |8 l
          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