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个一堆公仔箱論壇6 Y4 @9 ?% k/ x; y& O
共四堆os.tvboxnow.com2 k" w* C/ j2 f5 Z- F( @# K
称两次得出异常的在那一堆，其轻重
, X. {6 o9 b+ v' x在异常的那一堆中在称一次
% s0 W( v  C3 [8 I/ t* Yos.tvboxnow.com就可以找到了

ceteriz

divde the 12 balls into 3 sets of 4. 5 j$ _/ Y  j5 Q. [
weight any 2 sets.tvb now,tvbnow,bttvb. N9 |6 {0 ]7 B
if the 2 sets are equal, then you know the heavy one is in the third
4 e6 j# k7 e1 X  Hif one of the 2 is heavier, then the heavy one is in that setos.tvboxnow.com/ _. O5 D: J$ }: H. Z( S5 i+ M! x3 w# m
then divide the 4 balls into 2.
4 W; N% `7 B" e/ a3 \os.tvboxnow.comweigh them
) {( @0 Y  ?5 T( j8 mand divide the heavier into 1
; |' f2 i) m" k8 }and weight them.+ M# r% q9 B2 j+ C
3 x weighing and get the ans.  & V6 r$ L2 l6 G6 F8 W: c  w
in less than 15 secs.

kino_kino

1. 6 aside and weight.5 n/ E3 F! }" s
2. heavier side from (1), 3 aside weight again.
1 k& G& a; r( e& m3 n# M3. 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.
' ]  x* K0 b# U6 K( ~5 F) y8 m' ~
' i8 }0 D2 c$ \os.tvboxnow.combut i have a question. 重量異常 can be heavier or lighter.... so......