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1. put 6 at each side.. take the one side which is heavier
5 Q ?0 p" {4 p j9 M& P2 b: z/ o2. put 3 at each side.. also take the heavier side5.39.217.777 g: x8 K# q5 D; t
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.. |
發表於 2009-1-7 05:31 AM
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