this is too easy!!8 R4 y! u7 f# j6 V. v: a
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1. put 6 at each side.. take the one side which is heavier
/ P9 Y, m- Z1 S7 x2. put 3 at each side.. also take the heavier side
8 B+ N4 I% V/ a8 r5.39.217.773. 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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