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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塊磚公仔箱論壇4 @7 [4 I2 y/ w) J6 _( P: N+ [2 M- V
規則
只何用100人搬100塊磚,不能多也不能小...
100人當中有男人、女人同細路仔公仔箱論壇$ H" u6 I$ Z# u5 C1 q7 p
1個男人搬6塊磚$ L$ G/ }- u' w" @1 d3 K! {
1女人搬3塊磚公仔箱論壇. U& K0 Z4 v1 B& p" b
2個細路仔搬1塊磚
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問搬100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。' z5 O* i1 M# e8 o2 P' B2 f
要幾多男人、女人同細路仔
$ ?/ h2 q) c. c& i
答案30號公佈公仔箱論壇- u% V, v: z! O, f# l
" O ^+ E+ U& A. Z$ C0 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.
Let x = Male, y = Female, z = Child
6x + 3y + z/2 = 100 Formula 1tvb now,tvbnow,bttvb& U" p3 X4 v. ~
x + y + z = 100 Formula 2
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3TVBNOW 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 s2 k" M8 _$ r8 ^* V% P6 Q% W
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb5 I8 `/ b# l1 M4 \
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.
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 = 80.5.39.217.76- L8 Z j; k& @2 u1 ~8 y
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
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。0 E1 p( A2 L" r# A4 ^8 [. X: k
11x + 5y = 100 Formula 5

5.39.217.76, v& g# W1 Y) D. ~1 g
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# L0 e* s! Y6 Q0 v4 N
5 male tvb now,tvbnow,bttvb/ @" k# |* _! B0 C5 K
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 9 86

作者: fristz 時間: 2007-12-6 10:09 PM

thx4sharing

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