Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.) {7 g1 @$ x; H+ V# k( @0 Q
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.% A, ~. J5 ]* r' B
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