Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.) F. \5 j/ y7 R
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& C: s4 U- F Z6 N5 l5 {! a
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