jacky101mm

Well..divided into 6/6 first to define a heavier group is certainly right. Randomly select 3/3 will result another heavier group.
8 n4 I( H0 F4 R3 ]! L. n公仔箱論壇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.5.39.217.77:8898' ]2 r: O7 ?5 H- f: ]3 J3 _8 m& ?9 p