Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.9 V, N& W' Y* m! m/ S1 j. ?/ o; B( 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.- x% u+ t( R8 A" ~4 I
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