Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.公仔箱論壇/ [2 K' y# M# X( A" `5 C. f/ J' P
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.公仔箱論壇7 ?; |7 v8 q, |; f; T+ e