Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.' j4 N2 F& I+ a- }
The problem is we don't know the weight of each individual ball, so it will not be accurate to figure out which ball is irregular by only weight them once. 8 n% b$ \# F* t) `TVBNOW 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。