100人搬100塊磚 o) p2 ]( w- J
規則 1 s" r! V: }3 X1 |5.39.217.76只何用100人搬100塊磚,不能多也不能小... + N" f2 l. `. j9 J+ OTVBNOW 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。100人當中有男人、女人同細路仔3 R h* H3 t l" A h: S7 C
1個男人搬6塊磚 & ^$ y! T# S9 Q5 h, e* `' b' ]tvb now,tvbnow,bttvb1女人搬3塊磚5.39.217.761 f0 H+ R4 \3 I& ~
2個細路仔搬1塊磚 - L5 F2 Z' Y3 I1 x- }8 I. c/ rTVBNOW 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。**************************************************************tvb now,tvbnow,bttvb! E; L; C- z9 _# k/ N
問搬100塊磚tvb now,tvbnow,bttvb! U. B( A! G/ o: [" M
要幾多男人、女人同細路仔+ j, {- z- Q5 p) ]! e* d
公仔箱論壇! ?4 Z+ F! l+ X1 l
答案30號公佈 3 y: E& i# ^: h( @( d 3 E* U- C* _# a7 G! u/ @- Y[ 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. 4 G. L! A3 t8 h& z7 b4 E5.39.217.76Let x = Male, y = Female, z = Child + v7 N, W' ^' b+ J- F6x + 3y + z/2 = 100 Formula 1 ' g$ n: F( C$ s7 W9 Kx + y + z = 100 Formula 25.39.217.767 k8 _0 b) w j
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 $ y* N" z. p! j3 h' f- }公仔箱論壇Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 ! N6 i2 I. g# S- O7 O/ v5.39.217.76Formula 4 can change into 11x + 5y = 100 Formula 55 W& z* A! w# O6 v1 m$ |0 p
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. ( n+ F: g% d8 g4 v2 X7 |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 = 80.4 E7 L" [. ?; J' }+ C+ t
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,childrentvb now,tvbnow,bttvb) a2 R+ G6 Q7 G+ V) Y0 t5 N
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 9 K' l+ h% l# y" s Z6 D. `tvb now,tvbnow,bttvb11x + 5y = 100 Formula 5
( i7 w" q* `3 q. K# {$ ^tvb now,tvbnow,bttvb11X must be 0 or multiple of 5TVBNOW 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。# w& Z% q: k. X; [/ p% c4 T
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
