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
) v. w, s1 L8 a4 @8 Vwww3.tvboxnow.com共四堆www3.tvboxnow.com+ J' j3 l* p. r  R; b5 w$ f, k( @/ W
称两次得出异常的在那一堆，其轻重
5 U3 x# r2 X4 ~. ]# f8 j在异常的那一堆中在称一次
& D1 _3 F& K5 b# f. w公仔箱論壇就可以找到了

ceteriz

divde the 12 balls into 3 sets of 4.
; h- b2 l! ?0 M% W: a公仔箱論壇weight any 2 sets.
1 H9 s# Z4 q" W7 l% |& }tvb now,tvbnow,bttvbif the 2 sets are equal, then you know the heavy one is in the third
( W' x1 d8 h: ]: p" F. awww3.tvboxnow.comif one of the 2 is heavier, then the heavy one is in that set
! J8 n" ]8 M+ gtvb now,tvbnow,bttvbthen divide the 4 balls into 2.www3.tvboxnow.com8 G, g. c) O' H7 A4 O2 H
weigh them2 b/ Z0 j  g8 t2 l6 F& V& R
and divide the heavier into 19 `  n( N. U" l0 v* m
and weight them.
8 u2 Q: s; D& A) `! m3 x weighing and get the ans.  www3.tvboxnow.com; i" O. s- b, K  d* g3 k/ t
in less than 15 secs.

kino_kino

1. 6 aside and weight.
5 B' L9 Y$ m4 S6 q公仔箱論壇2. heavier side from (1), 3 aside weight again.
% `0 c) z& Q5 [7 a3 `tvb now,tvbnow,bttvb3. 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. www3.tvboxnow.com6 B% C+ X9 N! W# e
公仔箱論壇6 b: ]) i) K/ t. Z
but i have a question. 重量異常 can be heavier or lighter.... so......