Divide the 12 balls into 4 groups of 3's.( ?% K! ^; r! m& t& a' g9 R+ ^& E
Weigh group 1 & 25 s' Q5 j! C4 d/ S
then weigh group 2 & 3公仔箱論壇# @ h) ]2 k6 H: I
If the results are Equal & Equal, it means the ball with the different weight is in group 4. , k2 g# ^/ K* A" b3 S' @9 _) `os.tvboxnow.comIf the results are Equal & Unequal, it means the ball is in group 3.# f+ i( N$ Z( O' i
If the results are Unequal & Equal, it means the ball is in group 1. % k5 Z6 k/ V) j' X( C" MIf the results are Unequal & Unequal, it means the ball is in group 2.os.tvboxnow.com; G0 r" C. P- b& |0 W9 L
, E% P5 h& F5 tTVBNOW 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。Once you determine the group that contains the ball.- q- f; n- E: ~2 k
Simply weigh two of the balls