Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group. # w1 L @# t( g公仔箱論壇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. $ `6 I6 ?, w$ E" M0 F# @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。