返回列表 回復 發帖
答案!!!!!!!!!答案!!!!!!!!!!!答案!!!!!!!!!!!!!1
^:)^ >:D<
thx
let cc
not possible
不知道要怎麼做阿??
hao

the model answer is stupid

there got more simple way to do it, just read my way, the one i answered before
the
see 了
第一次,一边5个称,若质量没有异常就只称剩下的2个就知道异常的那个了;若有异常就把异常的那5个用一边2个称第二次,若没有异常就是剩下的那个异常了,若有异常就把异常的那2个再2一边1个称第三次就知道了
how?
先分3个一堆
( l, n) a# r, w. F共四堆$ c( C9 O4 f8 |
称两次得出异常的在那一堆,其轻重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。" G; I, Q% ^5 e  y2 q
在异常的那一堆中在称一次
$ v9 M) |% w9 a+ i3 N& f- `- L就可以找到了
divde the 12 balls into 3 sets of 4. 3 u# {9 a, r8 ?9 S: P$ d
weight any 2 sets.
/ a: B! C8 L  L/ b. s公仔箱論壇if the 2 sets are equal, then you know the heavy one is in the third
& V& Q" G9 Z$ l: ^) S- Q+ fif one of the 2 is heavier, then the heavy one is in that set
9 s' L' U3 k2 UTVBNOW 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。then divide the 4 balls into 2.
9 U, K$ l5 A1 c& O公仔箱論壇weigh them4 @3 f/ R2 z) [+ z4 o
and divide the heavier into 12 L( o; M* _) C+ ?/ w3 i
and weight them.
0 g% `* x2 v2 Y1 y) ]3 x weighing and get the ans.  
9 {# d- k+ {, V- ^7 F5.39.217.77in less than 15 secs.
1. 6 aside and weight.
6 ^) G( D9 g& A! O5.39.217.772. heavier side from (1), 3 aside weight again.
- E5 S+ W" e% K' P9 Q$ Rtvb now,tvbnow,bttvb3. heavier side from (2), take 2 out of 3 to weight. If equal weight the one not on the scale is the heavier one. else the heavier one on the scale is the odd one. 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 _% Q6 s5 f2 _+ ?( v/ S: b: Z/ i2 M/ `

1 y8 U  T$ W' i3 t4 @2 s$ D! n公仔箱論壇but i have a question. 重量異常 can be heavier or lighter.... so......
返回列表