Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.公仔箱論壇, v1 L5 p6 \! f
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.# @/ ~9 R3 L, n1 F. T
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