100人搬100塊磚 4 `1 I4 q1 |! G# {7 @5 K# [( x) e) ntvb now,tvbnow,bttvb規則" R- Y, N0 n$ _$ `' C
只何用100人搬100塊磚,不能多也不能小...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。9 y8 s' q9 ~6 b
100人當中有男人、女人同細路仔* y. Z: ~$ l2 u
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。% K# Q( i, @, |9 \% W4 c
1女人搬3塊磚公仔箱論壇) c2 t( o+ T( n6 p9 c
2個細路仔搬1塊磚 8 A0 A( A+ M1 r. `/ ~+ h$ m/ G公仔箱論壇**************************************************************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。& `% n1 N9 Y- D
問搬100塊磚 ; ~: [+ n3 O+ K; ?2 }7 ?5 n要幾多男人、女人同細路仔 9 {- {1 C- y5 ?& m8 x5.39.217.76 , ]9 F6 h- V6 B3 q% ?答案30號公佈 # Q" G% m D. t! l9 G! p ; n: g2 J1 E c; S" f( Q; p- z[ 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。0 v, G- O$ e/ \( v
Let 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。 G- H: {; u) o3 Z
6x + 3y + z/2 = 100 Formula 15.39.217.768 m8 A; X8 t' Y) M8 C/ s
x + y + z = 100 Formula 25.39.217.76/ i) A% ~+ _# u
Simplify Formula 2 into z, we get z = 100 - x - y Formula 35.39.217.76, N1 \- o, T" b; M
Sub Formula 3 into Formula 1, we get 6x + 3y + ( 100 - x - y )/2 = 100 Formula 48 U9 x% B0 f t3 C. t6 p' @& }
Formula 4 can change into 11x + 5y = 100 Formula 5 - s. O( l' X, B* t. x8 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。In Formula 5, x can only be 0 - 9, otherwise y will be negative number which we dont want. . O6 W! @* \5 b0 Q \& E6 y) ?. ?5.39.217.76And 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.! r5 V4 P8 U; N1 u
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