this is too easy!!( E5 T& X$ b I
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1. put 6 at each side.. take the one side which is heaviertvb now,tvbnow,bttvb' n( C5 ^2 }8 i# D5 m7 Z! {
2. put 3 at each side.. also take the heavier sidetvb now,tvbnow,bttvb' Z' O6 S4 \ o1 P- C1 h
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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