100人搬100塊磚 0 _9 h: a h, ?/ l* t b6 Y0 u規則 4 m* y9 j2 O2 Y! HTVBNOW 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...% N& O4 F2 B! l3 ^9 c4 E9 V# z1 `0 G. z+ Z
100人當中有男人、女人同細路仔 + |3 X; g9 T7 v. s7 a: PTVBNOW 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。1個男人搬6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。: P7 f* O! D7 v3 `% g, O/ @4 |7 R
1女人搬3塊磚 , Q0 K! J5 @% m5.39.217.772個細路仔搬1塊磚 $ ?' e9 c; w# z% U- X5.39.217.77************************************************************** ! o+ M7 _5 f( Y5 i/ |2 c( a公仔箱論壇問搬100塊磚5.39.217.771 W3 n3 U& Z& ~1 B' m5 n, b! a
要幾多男人、女人同細路仔 ! K- [( r9 e$ A# J, m/ [& l2 m 6 z0 d/ @2 i$ M3 Ttvb now,tvbnow,bttvb答案30號公佈5.39.217.77- M* `3 C" W$ n' G
公仔箱論壇5 O/ @8 ` ^5 R5 W1 H; a; r. D |' V
[ 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. % Q! I& Z: K( Q3 p9 w6 |+ T( ?5.39.217.77Let x = Male, y = Female, z = Childtvb now,tvbnow,bttvb: ^4 a n- x* }
6x + 3y + z/2 = 100 Formula 1 8 c8 v/ \0 L# r( Rx + y + z = 100 Formula 2 / \0 V$ A- n$ Z# F2 I" ?$ Btvb now,tvbnow,bttvbSimplify Formula 2 into z, we get z = 100 - x - y Formula 3. ^( s9 `% i% a) D5 r K
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4公仔箱論壇! } `$ X' m' a+ m1 Q# d
Formula 4 can change into 11x + 5y = 100 Formula 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。- @ |5 a/ u" O: Z; h
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. - ?9 g0 t: `' ]/ j0 N5.39.217.77And 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.( y, P* v4 F" z0 O3 H
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
原帖由 twinsdragon 於 2007-10-13 05:40 PM 發表 5.39.217.77$ |2 E1 J$ u' E( h v# ^8 O* M- C
11x + 5y = 100 Formula 5
! a7 x* G+ v5 h, Q" u# a Y& _tvb now,tvbnow,bttvb11X 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。* Z! ^& ^$ F- m1 M. ]
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children5.39.217.77$ K5 x* `5 W7 ?# ^8 m
5 male tvb now,tvbnow,bttvb, ^+ w8 J+ @: q. S
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM