Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.) r: Q. H' Z' c8 H; k
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. ' \$ Q. s/ Y7 G# G8 ?