divde the 12 balls into 3 sets of 4. tvb now,tvbnow,bttvb: F7 f/ d1 h/ n* |/ K9 _9 U
weight any 2 sets.
) R. `5 a3 q1 v u4 awww3.tvboxnow.comif the 2 sets are equal, then you know the heavy one is in the thirdTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。9 A: S7 y7 B) d# C$ Y
if one of the 2 is heavier, then the heavy one is in that set
6 g8 G& `5 X; R9 K8 x4 ~then divide the 4 balls into 2.tvb now,tvbnow,bttvb t# b* ]6 V3 ?* S2 G7 a H
weigh them
* p! a# z! K! w6 W* G/ d公仔箱論壇and divide the heavier into 1tvb now,tvbnow,bttvb5 b9 L* k0 q+ F5 H. l- j
and weight them., S7 K9 z I) u# N" s
3 x weighing and get the ans. 公仔箱論壇$ H5 R* |+ W1 \6 c# ~9 |
in less than 15 secs. |