Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.5.39.217.76- T7 J3 E% E3 S+ {$ V# }" N5 r# d
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. & V! J7 P6 b& R5 x5.39.217.76