100人搬100塊磚 8 [% W1 A7 ~% S* B& o- m5.39.217.76規則 ; y; I# X- g8 ETVBNOW 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。只何用100人搬100塊磚,不能多也不能小... 5 T5 r4 C; V2 ?' _/ e1 N公仔箱論壇100人當中有男人、女人同細路仔 0 P% L: P2 d# d* l公仔箱論壇1個男人搬6塊磚% ?$ b7 D3 X* d. t3 U5 c1 F
1女人搬3塊磚5.39.217.76( D) v" G3 d/ ?! l
2個細路仔搬1塊磚公仔箱論壇+ ]( j3 F2 R: L/ V, C% v e% K
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問搬100塊磚 . ]" r" {2 U$ j! P- q要幾多男人、女人同細路仔 2 O, ^- c, W' v8 J, i9 _公仔箱論壇 , b+ ^* W7 w U$ E, v% j% r/ G( K答案30號公佈 2 _/ v A8 s: Z% e2 u. _tvb now,tvbnow,bttvb5.39.217.76* I% v6 S8 \4 t& \/ z
[ 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。' h) o, E9 ~2 O8 F& ]
Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb- O1 h$ V& `2 `$ I
6x + 3y + z/2 = 100 Formula 1 " |5 |7 h( V/ q, U8 h5.39.217.76x + y + z = 100 Formula 2 ( f. }7 p- w% Y% v+ q2 M$ nSimplify 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。2 B; `8 W- B7 ]& [
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 45 M. l" L3 S) ]: I' W
Formula 4 can change into 11x + 5y = 100 Formula 5tvb now,tvbnow,bttvb1 G/ N& B3 A/ r) {0 d
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.tvb now,tvbnow,bttvb/ c, W S2 }$ D& }2 z
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. ' h1 f: L' F& Q6 m8 s5.39.217.76Eventually, 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 N6 r4 W& u S* k$ K) f) a) l
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 3 h5 r4 D9 D. r$ J公仔箱論壇11x + 5y = 100 Formula 5
2 F& j8 p1 ?4 k* E0 Y# Wtvb now,tvbnow,bttvb11X must be 0 or multiple of 5 1 S' U& S4 S, t& U- N; Hthat meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children ; |7 R3 {6 X* k1 W+ r: |9 ^5 male : `2 P% g6 Z- o% R; J. Mtvb now,tvbnow,bttvb9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
