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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
- F$ x& f  i( n3 @公仔箱論壇共四堆公仔箱論壇" U, r! H6 L! N( v% G! G
称两次得出异常的在那一堆,其轻重
& S4 K, p. _0 ]. k. `公仔箱論壇在异常的那一堆中在称一次, Z2 i" U$ v/ z# k% D; g6 ^
就可以找到了
divde the 12 balls into 3 sets of 4. 公仔箱論壇) h* a" ]: D) w  _( ^  ]7 a
weight any 2 sets.tvb now,tvbnow,bttvb4 B! E4 |' {, m9 ?
if the 2 sets are equal, then you know the heavy one is in the third
& i9 a, c/ {. y) cTVBNOW 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 one of the 2 is heavier, then the heavy one is in that set
& e8 S" H' v' p2 H8 {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。then divide the 4 balls into 2.
: c5 M3 ?; ]3 E2 [$ B6 M' etvb now,tvbnow,bttvbweigh them公仔箱論壇* b* e! P0 A! t* D/ e' V- ^
and divide the heavier into 1
, s) \% m! G$ _3 |' T% Ewww3.tvboxnow.comand weight them.tvb now,tvbnow,bttvb2 _1 T8 Z3 h* M: V+ Z2 I
3 x weighing and get the ans.  
7 [, i$ F, _, iin less than 15 secs.
1. 6 aside and weight.
; A8 L3 X: G7 x+ s7 e3 Z: M- S" RTVBNOW 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。2. heavier side from (1), 3 aside weight again.www3.tvboxnow.com! U$ S* m: v7 B* C+ J
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. tvb now,tvbnow,bttvb# Z" L! T" z- u# [% [$ G( s
: @) E  ]  A* ]% E: B# s0 q# ?& e' B
but i have a question. 重量異常 can be heavier or lighter.... so......
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