100人搬100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。1 D/ ]2 [- v) x6 L" A5 a- P
規則 / f7 Y' n0 C1 D& t5 C公仔箱論壇只何用100人搬100塊磚,不能多也不能小...! Z; F: j0 U. M/ L
100人當中有男人、女人同細路仔公仔箱論壇$ U1 I! P' F% A0 A; I
1個男人搬6塊磚5.39.217.76" g; x' s) s! b$ M( d; i
1女人搬3塊磚公仔箱論壇3 u) v5 Z+ V1 q& j7 W! r
2個細路仔搬1塊磚 ! `- w# H1 E1 @************************************************************** + n, q* w# k, J' g1 f" ~問搬100塊磚 / A' W! i" Z8 z6 t, M q, n, Ntvb now,tvbnow,bttvb要幾多男人、女人同細路仔 : K$ v% X7 y; T( F4 I; Z" c* w- k $ P2 P; k1 I2 Q I答案30號公佈5.39.217.76% M; Q0 ~* E, U- d4 V: @5 d$ y" _
公仔箱論壇6 x' @+ Z. ]& X" h" h% @) F
[ 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.5.39.217.76; A7 b8 V* V u9 H. g! E
Let x = Male, y = Female, z = Child$ V+ n' y& _! B( f
6x + 3y + z/2 = 100 Formula 18 i6 p/ s* \' S7 Y
x + y + z = 100 Formula 2 ) S9 V% o, X/ T- tSimplify Formula 2 into z, we get z = 100 - x - y Formula 3tvb now,tvbnow,bttvb$ d6 ?: n6 n. |
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4 + @$ g3 h) J8 M4 KFormula 4 can change into 11x + 5y = 100 Formula 5 " a5 S1 j6 ?# ]& F1 T$ z公仔箱論壇In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. ! c, n! Z5 n% S7 \3 N p2 D5.39.217.76And 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. , q! m7 x3 }, h公仔箱論壇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
9 G( S. S" L* c. c/ o5.39.217.7611X must be 0 or multiple of 5 / s! l9 P _1 a& O. ]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。that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 childrenTVBNOW 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。0 g3 E7 t5 R0 p: T5 Z7 F# u
5 male 3 i/ O: m! _( B) t/ g公仔箱論壇9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
, l% P" k) y. ~5 |4 ?
