this is too easy!!
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$ l& K' Z( j0 U0 h% a& Y: s/ E1. put 6 at each side.. take the one side which is heavieros.tvboxnow.com8 b& ~$ S% J" Z# b, }$ i
2. put 3 at each side.. also take the heavier side1 v; i5 L" [+ j l: @7 a
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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