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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5.39.217.76/ a) s4 Z6 ~3 B2 d7 b
規則5.39.217.76" l3 `% E6 X9 W- v- v
只何用100人搬100塊磚,不能多也不能小...公仔箱論壇" C4 ], ^; ?( A! B
100人當中有男人、女人同細路仔
: \, x- {3 v- |; }: R1 k公仔箱論壇1個男人搬6塊磚
* L2 n: W( W3 T; j3 k! d$ f! s8 w) R5 i, mtvb now,tvbnow,bttvb1女人搬3塊磚
$ I9 p8 C4 r# ]6 @: q- f4 A2個細路仔搬1塊磚
0 J! G& f9 c5 K4 y/ i/ ]7 |6 T$ S5.39.217.76**************************************************************公仔箱論壇/ b# h' v8 m; M9 N$ a
問搬100塊磚
; K; D# O) M/ ~5 C公仔箱論壇要幾多男人、女人同細路仔, N& o) i  {* Q7 K

/ J4 W) T' }% F. y" W0 [2 pTVBNOW 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。答案30號公佈公仔箱論壇  ^! d. l3 V- c3 L

3 q6 X5 X0 b) ^5 Y6 H" M+ X公仔箱論壇[ 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.5.39.217.76, U6 U' ~" e' _* v
Let x = Male, y = Female, z = Child
- @. o" ]+ \4 d, ~: \# Mtvb now,tvbnow,bttvb6x + 3y + z/2 = 100   Formula 1
- n, }& _0 ?- U! btvb now,tvbnow,bttvbx + y + z = 100    Formula 2
( o0 k9 Q( v. T4 f4 m6 @  D5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb/ N4 D2 B6 b: g
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
% f- d( Z( F9 w6 z, W5.39.217.76Formula 4 can change into 11x + 5y = 100 Formula 5
. Y3 X, G1 h! S+ [4 ~5.39.217.76In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
+ F) N) w/ @$ ?7 j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.
* i1 p! ?* d, u; w' G$ M* S  F6 qEventually, 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/ o/ k% M, @' o2 }3 M
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
8 x' c3 b- |4 a2 y. K7 ^5.39.217.7611x + 5y = 100 Formula 5
4 _3 \) |2 H3 w' T3 x& D公仔箱論壇11X must be 0 or multiple of 5
8 [. x) F- \' F7 q0 w0 Ethat meanz x must be 0 or 5
作者: manstein    時間: 2007-10-15 08:28 PM

86 childrenTVBNOW 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。. t! I) z; `" S8 K. X
5 male
4 I' w5 `" m* g; g6 w. M5.39.217.769 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   細路仔公仔箱論壇& I: R9 P) @# J; F" W; J- B
          5        9       86
作者: fristz    時間: 2007-12-6 10:09 PM

thx4sharing




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