Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.' T% E, s4 u# m Q1 X. g5 S- S
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.4 ?# h; p3 S0 ~- R9 S% H8 n1 g
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