this is too easy!!tvb now,tvbnow,bttvb t) R! K; P( n; a0 u# m
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1. put 6 at each side.. take the one side which is heavier1 x9 j6 g) _- b
2. put 3 at each side.. also take the heavier side$ M7 F" U# j8 T; Z
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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