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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
& X; w+ m; C2 u7 n共四堆
5 a0 g# K( K9 ^2 X, h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。7 K, E1 S" T! [5 Z6 M. W
在异常的那一堆中在称一次6 d5 \# R2 h- S0 Y# v- T
就可以找到了
divde the 12 balls into 3 sets of 4.
& X; y9 P& H4 m  {. FTVBNOW 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。weight any 2 sets.
) \3 ]" {) [, F% U# [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。if the 2 sets are equal, then you know the heavy one is in the third
1 U- m. @. ?+ d2 ?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。if one of the 2 is heavier, then the heavy one is in that set公仔箱論壇+ B3 \% S; {. _
then divide the 4 balls into 2.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。- A' v) F2 v, R! z% K8 ~9 e
weigh them# I, P( q3 b$ `9 P5 P
and divide the heavier into 1
2 _5 R2 Q6 F% N) i) I+ Cand weight them.tvb now,tvbnow,bttvb, y6 h( R7 E1 e' _" ]0 ]
3 x weighing and get the ans.  . Z- g0 h: P! @& `! i  y
in less than 15 secs.
1. 6 aside and weight.9 ^1 z5 t) j6 W2 d- ~( y4 h
2. heavier side from (1), 3 aside weight again.
& \) o7 X+ ]6 B3 K8 J5 F3. 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. + s& m. L: H& M
5.39.217.77; N& q7 Q* _# I: X. {5 o
but i have a question. 重量異常 can be heavier or lighter.... so......
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