this is too easy!!
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/ f% H. ~( W# G5 _. y$ G公仔箱論壇1. put 6 at each side.. take the one side which is heavier公仔箱論壇7 ~/ \" A, _$ b! X5 p. H# v6 E
2. put 3 at each side.. also take the heavier side
8 o0 c P+ q T0 L公仔箱論壇3. put 1 at each side.. if the weight balance then the one not put inside is the heavy ball.. else the side which is heavier is the heavier ball.. |