100人搬100塊磚 # i5 u5 i* d3 i- `1 z4 \公仔箱論壇規則 / c0 i( E* x% I: M9 O3 D5.39.217.76只何用100人搬100塊磚,不能多也不能小...5.39.217.766 I# Q4 W$ X. i6 R
100人當中有男人、女人同細路仔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。( b+ _8 x6 W1 b
1個男人搬6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。4 @# d+ S; |) Z R8 i/ g; }
1女人搬3塊磚公仔箱論壇5 v' j w% a' Y8 B5 e% }3 b1 j# f
2個細路仔搬1塊磚5.39.217.761 a& |; W S* D
************************************************************** 2 S1 v, N5 F7 |# d' p% f* i公仔箱論壇問搬100塊磚 9 }. m; n0 `- _( z/ {! N5 k5.39.217.76要幾多男人、女人同細路仔 2 N; |* q9 E% X: Z" u2 m( i! {) C6 A公仔箱論壇. E6 j# v6 h, u. \0 M) c
答案30號公佈1 R8 x; Q7 a' c2 I" R
( q5 S4 x/ n) F& F
[ 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.公仔箱論壇, ?; O1 N5 Z+ a9 a4 N" D4 i7 Q
Let x = Male, y = Female, z = Child5.39.217.76+ \: j; @% N/ F) Y7 H
6x + 3y + z/2 = 100 Formula 15.39.217.767 z1 U1 f6 X$ ~, x9 {
x + y + z = 100 Formula 2 7 k( U* h1 h4 \4 @5 B% n5.39.217.76Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 # O+ _1 ^1 Q) u) J1 a) J$ b" Ytvb now,tvbnow,bttvbSub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 $ n$ I- {) i. Z* `公仔箱論壇Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb3 x* X" j+ i- o( x: ^: R
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 7 L3 w: \. i2 k( C# X. tAnd 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" D+ u$ s/ D. t5 `2 l! [* x! k
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 G0 O- ^, |: \5 o4 f1 q [9 K/ ~公仔箱論壇0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
( R+ d* z" P% u8 g3 K公仔箱論壇11X must be 0 or multiple of 5 - s! ?$ z4 T% o7 y3 A9 I) d# `/ Z% _that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children ( Z3 H) x& w" o. S4 F& Utvb now,tvbnow,bttvb5 male ! q3 _+ r* J- o9 N7 n" FTVBNOW 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 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
