100人搬100塊磚! j7 m+ W/ G; ?8 |
規則 9 W. o2 {$ Q, s: z Y5.39.217.76只何用100人搬100塊磚,不能多也不能小... & a: z/ U4 W! n6 C. H9 A5 t100人當中有男人、女人同細路仔 ( {) N' {7 z4 `# r* R' Z. ` e5.39.217.761個男人搬6塊磚 % n$ g' \1 k% a公仔箱論壇1女人搬3塊磚tvb now,tvbnow,bttvb/ Q. b$ c, B5 X
2個細路仔搬1塊磚 2 P+ z% n' v' C2 K- |5.39.217.76**************************************************************; Q. `6 k" [6 @4 A7 t7 o
問搬100塊磚 ( l. g( O9 X0 j( D要幾多男人、女人同細路仔 % I% Y- {1 G A1 L5.39.217.76 # c, \0 H* z! I! _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。答案30號公佈 n3 N, \6 K' a% D& }- p' m ( l/ O! y0 k/ V, N; \8 ]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。[ 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. " n1 E4 y+ l; Q( A' i) Q5.39.217.76Let x = Male, y = Female, z = Child 1 b) Y) ?2 \" t* }1 t( M' y6x + 3y + z/2 = 100 Formula 15.39.217.76$ n/ G( ^% B2 \& C, _
x + y + z = 100 Formula 2 9 c4 Y* F3 u# i8 V) {; MSimplify Formula 2 into z, we get z = 100 - x - y Formula 3 1 J4 x+ a5 ?& V/ U# n# I/ {3 h7 @Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 * i; o' F; g! rFormula 4 can change into 11x + 5y = 100 Formula 5公仔箱論壇7 @; w+ r5 `3 x1 r- ~ ?
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.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。) D5 y. r, G# n6 l2 g# Z6 |5 d* |
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. ; A. D* v d1 Q7 A, ]$ xEventually, 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
tvb now,tvbnow,bttvb$ n$ Y5 l! S! i4 y( U7 C
11X must be 0 or multiple of 5$ c6 e1 Y6 X( l# u0 ]; V9 t V+ [) [
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children : p; L/ U P9 R$ P- J* L5.39.217.765 male 5.39.217.76( P* j. U6 @$ w* S I& |( m8 b5 M
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
