Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.
' e/ W0 o* q6 F0 Q! C2 a公仔箱論壇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.公仔箱論壇, m( [% t2 ~' B" {# a7 [% F
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