公仔箱論壇 - Powered by Discuz! Board

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,bttvb3 P5 k7 Q! U/ Q
規則
只何用100人搬100塊磚,不能多也不能小...公仔箱論壇; C: D5 U' g% |: X
100人當中有男人、女人同細路仔 g' d5 d- b9 d* b. x6 ^" T' e6 ]
1個男人搬6塊磚
1女人搬3塊磚
2個細路仔搬1塊磚公仔箱論壇" }8 J" X6 x6 _: n$ u
**************************************************************
問搬100塊磚
要幾多男人、女人同細路仔

答案30號公佈
公仔箱論壇* ^, t* A* ]2 _ O! Y& W
[ 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.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。8 X# a) J6 k# \- l) o5 I3 n6 F
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3公仔箱論壇2 h6 p! {9 t8 @' j, u
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4
Formula 4 can change into 11x + 5y = 100 Formula 5) D/ ]- M* ?* w/ }
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.
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 = 80.3 @: P* P: [" \9 R# U+ s" 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,children5 D9 o ?, `5 a/ K* t2 m5 T
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 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。6 A* I& S | S3 V* N
11x + 5y = 100 Formula 5

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。4 { W ^# _; [( U8 |) i. T0 E
11X must be 0 or multiple of 58 [2 ]/ n$ u# r( X$ e1 c
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children5 J( i; W; q3 w) g! o
5 male 公仔箱論壇5 M; {/ b- T, X4 T+ I* j1 @
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" @- s: q7 ]* `9 _
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/)