lux1261

答案!!!!!!!!!答案!!!!!!!!!!!答案!!!!!!!!!!!!!1

lesley

^:)^ >:D<

leekh

thx

jc49

let cc

Special_Forces

not possible

sm911118

不知道要怎麼做阿??

laou

hao

jen198053

there got more simple way to do it, just read my way, the one i answered before

samkk123

the

hakis

see 了

jenfien

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

fxenon

how?

nyb

先分3个一堆: s7 m) G& ?" X* B' n" X- {. |
共四堆9 R$ _0 [  z/ |- k  j: m/ |
称两次得出异常的在那一堆，其轻重. o. _3 F8 \% i7 Y, d  c5 n
在异常的那一堆中在称一次; _/ I; {- T, z% h! R0 `2 d
就可以找到了

ceteriz

divde the 12 balls into 3 sets of 4. tvb now,tvbnow,bttvb6 L9 R) J4 h" J6 f
weight any 2 sets.
- P. ]- B6 k, m! h- atvb now,tvbnow,bttvbif the 2 sets are equal, then you know the heavy one is in the third
; N9 H( `! w, m/ J5.39.217.76if one of the 2 is heavier, then the heavy one is in that set
# q* B! G  H" R& J: y( s4 h$ a公仔箱論壇then divide the 4 balls into 2.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。3 Q$ e8 u7 m5 D5 e" T" M
weigh themtvb now,tvbnow,bttvb0 @$ k" ?2 s: I' X  n& P# I/ i
and divide the heavier into 13 |# R$ z: O) a$ e4 M$ P
and weight them.5.39.217.76; {2 \$ F' m, W$ R5 M
3 x weighing and get the ans.  
  G$ F5 ]) X% B" e6 ETVBNOW 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.

kino_kino

1. 6 aside and weight.2 m  b; |1 n" Z! ]/ x1 i% `
2. heavier side from (1), 3 aside weight again.5.39.217.76) _3 b6 W* C$ O7 c
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.
2 }: K/ c) b6 Q7 r7 Q
1 X9 c- [% ^+ `" @: O+ Ftvb now,tvbnow,bttvbbut i have a question. 重量異常 can be heavier or lighter.... so......