100人搬100塊磚1 l) |8 g2 R4 x0 m( `
規則- |6 Y# D5 B2 y" X
只何用100人搬100塊磚,不能多也不能小...公仔箱論壇3 w/ d+ ?6 [: \: X! y& y$ g
100人當中有男人、女人同細路仔 % f+ d0 U+ u$ h. d5.39.217.761個男人搬6塊磚 / C( S- w: d( K5.39.217.761女人搬3塊磚# D6 k( n& b m" o; ?1 d) }. C6 K
2個細路仔搬1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。" ` j. {* E; f. e1 O* V1 f
**************************************************************公仔箱論壇6 B, Z! y( f+ t+ U1 s z2 G+ ?
問搬100塊磚 3 a4 `) L. K3 X$ S! s. u& Qtvb now,tvbnow,bttvb要幾多男人、女人同細路仔 8 [& c: G4 B. `2 e5.39.217.76TVBNOW 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。% u$ E$ g! d+ c& D6 x! R1 c
答案30號公佈5.39.217.76! o7 `- _ Y' X+ b" k- Z# Q; q- c
公仔箱論壇( m9 B% W: t0 z5 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。& e- x- y! W3 L5 c0 d1 w1 T
Let x = Male, y = Female, z = Child5.39.217.76- F; j, j) i- Y" b
6x + 3y + z/2 = 100 Formula 1 + |2 P# ], @/ ]# T+ x l, Z7 v8 Ux + y + z = 100 Formula 2tvb now,tvbnow,bttvb) @, F4 M2 q1 ~5 P" h1 r7 y, f4 N
Simplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb* H' u% P" g E) P% W+ Q8 Z1 z
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 8 ^3 o/ w' r$ G6 @' I) u4 hFormula 4 can change into 11x + 5y = 100 Formula 5 ( P" w: U# D* A1 x# R8 T& F6 SIn Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. ) N4 u* u; K: L+ e+ p) @1 n& a. XAnd 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.% ] t0 Y4 w6 E" i- w) @) w
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/ k8 z; N8 ?1 R6 b
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 公仔箱論壇0 Q0 z3 R2 a. Q# l# x# X2 d+ W
11x + 5y = 100 Formula 5
公仔箱論壇2 Y% q" { h" a6 Y; D7 l+ ~* }
11X 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。8 S8 Q' o7 b; M, J* q
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children + i9 t( r& K7 C: m8 H; v( D1 z公仔箱論壇5 male 公仔箱論壇* r/ x$ ~4 n$ m1 a' ?
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM