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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tvb now,tvbnow,bttvb" M1 l, O5 d+ a# W9 v& R5 v
規則公仔箱論壇4 {, ^# W) q5 ]2 v0 Z
只何用100人搬100塊磚,不能多也不能小...5.39.217.76: T1 Z" _+ V/ e; {! S; X
100人當中有男人、女人同細路仔3 @( i+ g0 u8 ^ A: l4 y* A4 h
1個男人搬6塊磚
1女人搬3塊磚" \7 g, g% O0 @0 Z" j
2個細路仔搬1塊磚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。% `9 N9 R; W+ L; x6 | ]0 D" C8 U
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問搬100塊磚
要幾多男人、女人同細路仔

答案30號公佈5.39.217.76; t5 {! U6 r+ h. ~1 r9 B8 \8 b
tvb now,tvbnow,bttvb& o" I! d6 P/ O1 H/ ]
[ 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.
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 15.39.217.763 n. U' k' H7 W4 |8 J% u
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3- l( Z9 z- X$ \ z2 l0 O7 w- p, |3 H
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
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb5 D. V/ Q( n. c. W1 V
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.
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公仔箱論壇4 c. d6 b. ?9 j2 L/ x& a# F+ B
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。) Z) x3 Z* p- j( p# M" B L
11x + 5y = 100 Formula 5

公仔箱論壇) r' _/ \2 I, S4 S
11X must be 0 or multiple of 5
that meanz x must be 0 or 5

作者: manstein 時間: 2007-10-15 08:28 PM

86 children
5 male
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5.39.217.766 v5 B: Z. S7 [4 W1 k' F% p, W8 \
5 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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