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
) a0 A& L: f6 e* q; i共四堆
+ e+ Z( z/ M& i: @: Z' p2 k4 Btvb now,tvbnow,bttvb称两次得出异常的在那一堆，其轻重
! f" L$ p2 O/ }3 W公仔箱論壇在异常的那一堆中在称一次tvb now,tvbnow,bttvb& n5 e+ q" P# ~5 J- r9 N+ x  C
就可以找到了

ceteriz

divde the 12 balls into 3 sets of 4.
4 r& i2 D- d; Jweight any 2 sets.2 i1 [/ u' k4 i( x( W; s% _" T4 S  I
if the 2 sets are equal, then you know the heavy one is in the third
( {7 W5 D' e- L+ b- \if one of the 2 is heavier, then the heavy one is in that set
6 u2 g: I5 n9 I9 o7 o; `then divide the 4 balls into 2.0 s4 j, ^+ q. }4 U' r' O" p: ?$ V
weigh them: ]9 r+ m8 S$ o: g6 H
and divide the heavier into 1
% w2 E  ^  |5 fand weight them.' V: H& K: S3 x, t7 N! G! r
3 x weighing and get the ans.  公仔箱論壇1 D6 z: t) J7 s
in less than 15 secs.

kino_kino

1. 6 aside and weight.
2 `' a' \7 X: Y8 Z; |7 C5.39.217.762. heavier side from (1), 3 aside weight again.5.39.217.76+ F* e! A6 i$ d$ n
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. tvb now,tvbnow,bttvb, B) C: U: a; }5 E! k
公仔箱論壇3 h; |  b. U) L+ L. P
but i have a question. 重量異常 can be heavier or lighter.... so......