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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
. l" Q9 `; U' v  q' [2 `) R7 V共四堆
2 H4 n3 a. b& Q6 J* @: ?5 T3 M; i# K/ A5.39.217.77:8898称两次得出异常的在那一堆,其轻重
+ h( o4 y2 g7 ~  L  a在异常的那一堆中在称一次
! ^5 [. P% V" M' y( ~5 P5.39.217.77:8898就可以找到了
divde the 12 balls into 3 sets of 4. . Z: U5 c8 r* d% ?# T- ^
weight any 2 sets.
  F6 ?# M3 b: o! M; F1 K公仔箱論壇if the 2 sets are equal, then you know the heavy one is in the thirdTVBNOW 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。: M. W9 W9 @1 V1 a% J
if one of the 2 is heavier, then the heavy one is in that set& _* u1 O, y2 A, }; e% }
then divide the 4 balls into 2.: w2 W4 ?9 _; x. U/ b
weigh themTVBNOW 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。6 x# V7 g3 r7 m  q! c
and divide the heavier into 1
/ L) A$ @* \5 m$ ?3 a公仔箱論壇and weight them.
' D4 k3 b. k$ N' B0 i3 q" j" o# utvb now,tvbnow,bttvb3 x weighing and get the ans.  
" D- Q7 W+ j1 l2 t; D+ R: 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。in less than 15 secs.
1. 6 aside and weight.5.39.217.77:88985 R: ]1 h: S! h
2. heavier side from (1), 3 aside weight again.
9 E9 K3 Q9 N& ~  h0 C; e* k6 l5.39.217.77:88983. 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. ) p# z! H# `, B7 \! u/ A
5.39.217.77:8898" p+ W  n2 V$ J0 o1 _% u
but i have a question. 重量異常 can be heavier or lighter.... so......
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