100人搬100塊磚 ! B: W% K$ U; s. B2 DTVBNOW 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。規則5.39.217.77$ V! n1 D ^2 B6 x( J
只何用100人搬100塊磚,不能多也不能小...( ^3 [( L$ n: q7 p0 E
100人當中有男人、女人同細路仔5.39.217.774 W1 O f7 @- w( x
1個男人搬6塊磚 , \: Z& @ A8 F: W5.39.217.771女人搬3塊磚 $ S7 G. V7 |/ h+ p; d8 H) |1 d2個細路仔搬1塊磚5.39.217.77: b8 Z | ~" S8 y0 n
************************************************************** 9 K& L& O: U, [5.39.217.77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。: L- d F& O; E
要幾多男人、女人同細路仔 & i. R( N7 p7 D5 I+ [公仔箱論壇. B! I7 _$ q, [ U
答案30號公佈 9 B3 x+ Y/ C( p! L% a# t0 v3 b5.39.217.77+ d. O1 q8 R5 m
[ 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。- Y6 o6 I! \. a0 w1 y% C
Let x = Male, y = Female, z = Child . y+ o9 v5 R# r# z: ?tvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1 3 @/ v1 k: t+ m3 ?公仔箱論壇x + y + z = 100 Formula 2 1 M# p- `9 t {9 cSimplify Formula 2 into z, we get z = 100 - x - y Formula 3: U' l4 S2 w9 w
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 3 K" x/ ?) ^# L% C# \/ TFormula 4 can change into 11x + 5y = 100 Formula 5' T. J. n: S9 J& _9 l3 L/ `
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.公仔箱論壇+ d1 ~' V& T5 [# C) {& W
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 t! w: P* n' r j: W# ?5 }# D: U' CEventually, 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,children5.39.217.779 r* _# \3 @ f' ~8 @' S
0,20,80 or 5,9,86作者: RyanC 時間: 2007-10-14 10:46 PM
