Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.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。: C$ ^& o- t- n4 _ U
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.5.39.217.77. K$ Z' i& A4 g& P, D' x