100人搬100塊磚, r4 c) |6 K- s" s( T
規則 6 s( ~" E* @* n只何用100人搬100塊磚,不能多也不能小...5.39.217.771 K3 @: y9 v: t' X: I
100人當中有男人、女人同細路仔公仔箱論壇% U6 w4 H% Y$ j+ y! K+ P
1個男人搬6塊磚4 M9 C2 e# ]8 a2 h+ n' k+ h
1女人搬3塊磚 ! V& r. W+ H6 w/ ?; ?; U0 E2個細路仔搬1塊磚 ^: T/ w# ?8 r; I( U1 @5 _0 g. F+ Q**************************************************************4 G. T3 G) f2 z* o @- b
問搬100塊磚 + D& _* i0 G) q$ g4 Itvb now,tvbnow,bttvb要幾多男人、女人同細路仔 + {7 B- [- O# Q F- p8 z* ?3 B7 utvb now,tvbnow,bttvb , ?# K3 f1 g+ S1 K公仔箱論壇答案30號公佈 ; u2 m1 D* p" Q4 Y( I4 QTVBNOW 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。$ b3 }2 ~& H+ S
[ 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. ! Y. \$ r4 E6 M) z8 D0 n# KLet x = Male, y = Female, z = ChildTVBNOW 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。* F: W9 }4 u8 b
6x + 3y + z/2 = 100 Formula 1公仔箱論壇: z5 b6 I; M$ Z# Y) y# H
x + y + z = 100 Formula 2 2 u8 z. {+ i# [5 B2 b4 w公仔箱論壇Simplify Formula 2 into z, we get z = 100 - x - y Formula 3 & v( A+ y. ]% f- p5.39.217.77Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4tvb now,tvbnow,bttvb# F& J1 z( Z0 t5 |5 F0 q. I
Formula 4 can change into 11x + 5y = 100 Formula 5 , N, {# Q: c& h) ?; A9 y公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. 8 x; K" R% n; S4 Q9 h7 ?8 @- gAnd 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.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。2 Y% H; h( Z7 t* G# f* n
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
& m0 B: |: e) `/ a: u3 JTVBNOW 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。11X must be 0 or multiple of 5 " P% Y( b8 S! F公仔箱論壇that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrentvb now,tvbnow,bttvb0 a; K; W% ?0 m; M* v" T* A% i
5 male ; x/ v4 u1 \7 }' A公仔箱論壇9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM