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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
  V% h' v* y* f2 U4 @% W5 L. YTVBNOW 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。規則
) E) j2 l) q- I6 @$ ?3 c2 X' Xtvb now,tvbnow,bttvb只何用100人搬100塊磚,不能多也不能小...
7 C  R) l1 ?, e6 A' O9 N100人當中有男人、女人同細路仔
" k" e& ?9 g# @8 c: X0 L1個男人搬6塊磚0 @& b' D8 I  f0 e- k
1女人搬3塊磚
) j& C. o0 C: j8 U; a9 htvb now,tvbnow,bttvb2個細路仔搬1塊磚
+ F5 k, _, J; M# w7 ?$ R公仔箱論壇**************************************************************
" ~! I; Z+ g/ z9 Z$ n: h; ktvb now,tvbnow,bttvb問搬100塊磚tvb now,tvbnow,bttvb1 e' L4 V/ ?# L& o: S6 Q
要幾多男人、女人同細路仔
% q/ J; r8 ~; ytvb now,tvbnow,bttvb
& k$ Y& k) O! ]+ q8 K4 P6 ]5 s- R5 X; E公仔箱論壇答案30號公佈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。1 J# P' X7 S! Y
! P9 y6 j/ z+ ^1 W! i6 p
[ 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.
& J7 d4 Q1 T# R  qLet x = Male, y = Female, z = Child
! b$ M1 \5 t0 g* c3 _2 D% otvb now,tvbnow,bttvb6x + 3y + z/2 = 100   Formula 1
* c7 O  _/ I% W( v) C5 i' o8 Kx + y + z = 100    Formula 29 Y# ]7 H  C, u, A- D
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3, O% |! L% g4 C9 y% f8 j
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4) m5 x+ ]0 M1 I6 c, o
Formula 4 can change into 11x + 5y = 100 Formula 5
! K, E! z1 |+ V" w) OIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇% P1 B+ V& f! g+ D5 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.+ }, a! I$ R/ W: f- [
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
. e+ ^, p4 ]- f0,20,80 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 / C9 J9 w  m$ p- m5 B5 ]  S8 Q. f
11x + 5y = 100 Formula 5
" X, X3 r1 l' {- p) E4 ?5.39.217.7611X must be 0 or multiple of 5tvb now,tvbnow,bttvb" x& R9 H! ~; [( Z& b/ [
that meanz x must be 0 or 5
作者: manstein    時間: 2007-10-15 08:28 PM

86 childrentvb now,tvbnow,bttvb1 e: Q( h+ c/ l' @8 \' W; Z; O8 _1 r- n
5 male
9 L3 j6 j  O) b; K7 }* _/ R5.39.217.769 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
# c+ \- i" ^7 Q, |tvb now,tvbnow,bttvb          5        9       86
作者: fristz    時間: 2007-12-6 10:09 PM

thx4sharing




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