Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.tvb now,tvbnow,bttvb4 P7 J& a5 a# ?/ |1 l% [
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$ [7 f9 l6 x H; p9 y% Q# ^7 M8 E* C
 |