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
( [0 A' y% z4 c- u; G公仔箱論壇共四堆
+ F7 t+ S* K+ |! v& Dtvboxnow.com称两次得出异常的在那一堆，其轻重, Z' N1 [: t9 U& c
在异常的那一堆中在称一次tvb now,tvbnow,bttvb- U/ [, M9 z& Y# V: L
就可以找到了

ceteriz

divde the 12 balls into 3 sets of 4. 9 b" U+ y/ i5 I0 E- _
weight any 2 sets.公仔箱論壇' R6 Y4 y* p& U; f3 M- w- k/ O
if the 2 sets are equal, then you know the heavy one is in the third公仔箱論壇6 ^* z* S, |5 T
if one of the 2 is heavier, then the heavy one is in that set
/ [2 G  I1 }! n. W* y" Qtvboxnow.comthen divide the 4 balls into 2.
9 E2 B1 ^/ u* z, w$ nweigh them% y$ {; W2 G8 j# U! Z4 p
and divide the heavier into 1
( H# \0 a; I* X3 v& M/ p/ q0 n公仔箱論壇and weight them.
6 K! z0 s" P1 T6 i2 A3 [tvboxnow.com3 x weighing and get the ans.  
: B0 G  @9 w# ?公仔箱論壇in less than 15 secs.

kino_kino

1. 6 aside and weight.公仔箱論壇$ a! _. b  C" v! V$ @
2. heavier side from (1), 3 aside weight again.- A$ C7 C4 p( L1 c3 B( Y! f
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. & M+ \9 k5 [7 e
tvb now,tvbnow,bttvb# A& \  H! z8 ^, A
but i have a question. 重量異常 can be heavier or lighter.... so......