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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
# p4 ]4 C+ P# S; b" o9 ]共四堆
2 [5 ~- _) n9 O; U% Z- O, Y5 N6 Ktvb now,tvbnow,bttvb称两次得出异常的在那一堆,其轻重
" ]% u! w! o2 k* n( j' r; ptvboxnow.com在异常的那一堆中在称一次
% @7 y* t: `; utvboxnow.com就可以找到了
divde the 12 balls into 3 sets of 4.
" y) f6 K$ c9 W- Tweight any 2 sets.tvboxnow.com0 s9 |" X6 ~( x- K1 N2 h
if the 2 sets are equal, then you know the heavy one is in the third; P4 [# r4 \: n9 V
if one of the 2 is heavier, then the heavy one is in that set
, f( T. K( A' i( a. Q9 Dthen 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。3 f2 ~5 c) e' \/ D4 c
weigh them
: H6 q" m2 I! }, F. r8 Oand divide the heavier into 1tvboxnow.com+ O8 `1 b/ V2 v' r% T
and weight them.
, O5 `7 H, i) z- ktvb now,tvbnow,bttvb3 x weighing and get the ans.  
9 N/ s8 Y3 @5 GTVBNOW 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 less than 15 secs.
1. 6 aside and weight.
/ f: f+ y+ x% q5 x2. heavier side from (1), 3 aside weight again.公仔箱論壇! D4 p4 |$ a: T' X0 \! d
3. 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.
% b( t/ k" o5 ^5 X: A. J, Ptvb now,tvbnow,bttvb) ^9 u5 y  ~3 w: q. B1 {
but i have a question. 重量異常 can be heavier or lighter.... so......
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