100人搬100塊磚 5 e; v/ c* T3 r/ t* U( D; {tvb now,tvbnow,bttvb規則 % m. q, z X# y6 N2 A# {tvb now,tvbnow,bttvb只何用100人搬100塊磚,不能多也不能小... ( ~/ g. q4 q7 O+ W7 H5 b# R5.39.217.76100人當中有男人、女人同細路仔 / E# e8 w! r/ I/ X1 h M& A9 CTVBNOW 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tvb now,tvbnow,bttvb1 W4 M% b% ?! k3 H. Q" \/ d
1女人搬3塊磚 ( J' q% Z9 D" K) [2個細路仔搬1塊磚 e4 v( A( `* ^5 D) q; l5.39.217.76************************************************************** _+ B' c, @; X; O# U/ u6 g3 J; q5.39.217.76問搬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。0 H) `9 y1 d2 v) \/ W
要幾多男人、女人同細路仔 - u, s$ h; f- h- ]6 G7 btvb now,tvbnow,bttvb ; P- w. i( j& V4 }, |tvb now,tvbnow,bttvb答案30號公佈; ^& S3 j7 ~( J' q* q: H7 d) g
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[ 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.tvb now,tvbnow,bttvb9 D1 t( m6 U) \- s. i$ w4 k _' g
Let x = Male, y = Female, z = Child / i; [; C! i) X. A3 i e* Ltvb now,tvbnow,bttvb6x + 3y + z/2 = 100 Formula 1 3 |% T0 m9 D$ O$ W, `9 K4 [9 itvb now,tvbnow,bttvbx + y + z = 100 Formula 2 - ~8 s) d4 j6 R5 o+ Q5 f9 OTVBNOW 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。Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76- Z w( N {0 P, s) X; k0 v5 n
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 4TVBNOW 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 s$ a8 m9 X+ ?8 a; Q
Formula 4 can change into 11x + 5y = 100 Formula 5% e; Z' V0 _( s* T4 ^- S T' ?
In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want.5.39.217.76# y% S2 K: f; l- ?* B) V! X
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. ! z1 L v: ~( ~' ?: A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
7 g+ v& {+ s8 X/ m3 z3 V7 g" t11X must be 0 or multiple of 5; `( \% s6 {- N5 t, \. y% w
that meanz x must be 0 or 5作者: manstein 時間: 2007-10-15 08:28 PM
86 children 2 X3 A/ {1 o3 X( j" R# S5 male 8 ~2 q/ C! d+ l8 U+ d5 ?4 G
9 female作者: dafunhei123 時間: 2007-10-15 10:39 PM
