Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.5.39.217.77:8898) S( b' b1 s3 o; a1 s4 z1 Z
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. . J. U/ G4 h9 Z7 l公仔箱論壇