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
; i: E& i' J3 v) ]! r% S$ F共四堆  x# {! v9 V+ b; V" p$ E3 j
称两次得出异常的在那一堆，其轻重
' n) T3 t* X3 ~0 g+ j- ?公仔箱論壇在异常的那一堆中在称一次# C$ O3 u. D3 Z7 H" K
就可以找到了

ceteriz

divde the 12 balls into 3 sets of 4. 5.39.217.76# x: e; m4 M0 Y+ C# x
weight any 2 sets.公仔箱論壇, |1 s) R+ o5 o% f; Z8 v0 {. ^
if the 2 sets are equal, then you know the heavy one is in the third公仔箱論壇$ Q: g% I; U/ ]
if one of the 2 is heavier, then the heavy one is in that set
# {% A8 B0 ^  b; l公仔箱論壇then divide the 4 balls into 2.公仔箱論壇! r1 V" Z  U& s7 s  }6 [  @
weigh themtvb now,tvbnow,bttvb7 ]) x( t" w6 s  U9 {
and divide the heavier into 1
& p6 k8 Z4 D) _2 E/ D# k公仔箱論壇and weight them.2 z  c( K  i- R$ o2 G- Z
3 x weighing and get the ans.  
* P1 M- [8 K; N9 B/ G+ s- Uin less than 15 secs.

kino_kino

1. 6 aside and weight.5.39.217.76( Z  ^* f. ]/ ^2 K/ \
2. heavier side from (1), 3 aside weight again.公仔箱論壇7 Y# D  z8 c& a9 q9 T
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. 5.39.217.76/ P% b; b4 {2 M& |4 Y- f

; J9 b; ^& D' e, f( vbut i have a question. 重量異常 can be heavier or lighter.... so......