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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
" q! K4 W) ^" O) l6 I  k# `. F! j共四堆/ S- |+ z% F" \3 E2 M( `5 k  Q
称两次得出异常的在那一堆,其轻重tvb now,tvbnow,bttvb9 c2 g  D9 }. C5 Q5 g  L$ F
在异常的那一堆中在称一次www1.tvboxnow.com2 i4 E9 Q) Z% h
就可以找到了
divde the 12 balls into 3 sets of 4. 公仔箱論壇% \; d6 @, ^% R$ c
weight any 2 sets.
: {7 H8 D7 R6 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。if the 2 sets are equal, then you know the heavy one is in the thirdwww1.tvboxnow.com6 Q( n/ _" k( W; U
if one of the 2 is heavier, then the heavy one is in that set  K' I( d1 K2 @( I
then divide the 4 balls into 2.tvb now,tvbnow,bttvb, a( ~  R2 T3 }# [/ t
weigh them
) u5 g" h3 D9 t( u! V7 Y( i/ [www1.tvboxnow.comand divide the heavier into 1
8 }% Z" I5 j4 L, O! g8 r公仔箱論壇and weight them.% t( O5 l3 a: C  G! v! P$ a
3 x weighing and get the ans.  
" \. _- u" F7 B! {$ gin less than 15 secs.
1. 6 aside and weight.3 L- X5 R9 [9 U' m
2. heavier side from (1), 3 aside weight again.tvb now,tvbnow,bttvb8 y5 A: a+ E8 d; h) w
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. www1.tvboxnow.com8 n9 t% M8 [$ i" I9 c
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but i have a question. 重量異常 can be heavier or lighter.... so......
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