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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
: h% A. N5 L* |7 p" Z: j" T公仔箱論壇共四堆公仔箱論壇% P% N8 ]) \2 m6 A9 V
称两次得出异常的在那一堆,其轻重
  m0 d9 C  Z+ h8 u& D4 Y5.39.217.77在异常的那一堆中在称一次
$ N+ ^5 W7 j* X, i就可以找到了
divde the 12 balls into 3 sets of 4.
$ K; d7 o+ Y' U+ J% Z3 L! Jweight any 2 sets.
4 e/ _& `& s9 t+ q) U, y" t& Q7 c' N! ?公仔箱論壇if the 2 sets are equal, then you know the heavy one is in the third
9 R0 w  `- Y/ l3 iif one of the 2 is heavier, then the heavy one is in that setTVBNOW 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。, b, L1 ~9 \/ s) K; \" Y$ K5 q
then divide the 4 balls into 2.tvb now,tvbnow,bttvb- w/ N1 [! l/ v# \. F
weigh themtvb now,tvbnow,bttvb; e# k7 a! N! Y2 S" D8 P
and divide the heavier into 1TVBNOW 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。) O3 ~9 D. R* ]8 X( A. z
and weight them.
' f3 R' }' I; l6 |& K! t2 E8 J3 x weighing and get the ans.  
; l' A6 M( @/ u- J) ~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。in less than 15 secs.
1. 6 aside and weight.
4 w) Z9 M1 H0 n& |; H) W8 h, wtvb now,tvbnow,bttvb2. heavier side from (1), 3 aside weight again.
  R$ p/ ?( ~% L3. 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. ; N( i: P5 z8 t4 K3 k  H
8 J; f+ [, ]( @" F& s
but i have a question. 重量異常 can be heavier or lighter.... so......
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