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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tvb now,tvbnow,bttvb! j% V( `  Y' k+ ]. [) \5 u
共四堆5.39.217.77:88987 H) c& \& m4 M- j$ {0 N1 y7 L
称两次得出异常的在那一堆,其轻重
3 [; G# R0 t- u: R% t! m$ u在异常的那一堆中在称一次
* q: t+ q' k. J/ i# n! B就可以找到了
divde the 12 balls into 3 sets of 4.
( w4 \$ Q' A3 U$ A' s0 X3 cweight any 2 sets.% o0 G9 p/ [9 X& I
if the 2 sets are equal, then you know the heavy one is in the third
: T3 l5 R4 f6 t8 v% mtvb now,tvbnow,bttvbif one of the 2 is heavier, then the heavy one is in that set$ E: r( m: g+ O4 n4 ~' y, n
then divide the 4 balls into 2.
4 f' f! o3 M* k" yweigh them
; r& J4 D3 t9 U) Z% s2 `3 g5.39.217.77:8898and divide the heavier into 1
5 w+ M( D+ y$ F1 i5 R# lTVBNOW 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。and weight them.tvb now,tvbnow,bttvb7 o! W# o; q" d3 Y( a, V
3 x weighing and get the ans.  
3 m1 a8 h, @4 I: J" t7 B公仔箱論壇in less than 15 secs.
1. 6 aside and weight.
. i5 t, l+ x. ^; J8 S: q  u公仔箱論壇2. heavier side from (1), 3 aside weight again.5.39.217.77:8898" h+ ?3 u: b& D9 F( O
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. 公仔箱論壇6 L+ p0 m& J! C0 h

, L7 A$ C5 a' F* T/ V! Otvb now,tvbnow,bttvbbut i have a question. 重量異常 can be heavier or lighter.... so......
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