Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.+ d5 f0 a* n! H- Q( ` g% v
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. 3 R+ E, F8 q2 v8 e