this is too easy!!tvb now,tvbnow,bttvb7 `% i) ]* g* F; M
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1. put 6 at each side.. take the one side which is heaviertvb now,tvbnow,bttvb4 c4 x- S, N; V* M
2. put 3 at each side.. also take the heavier side
& j) _9 W o; J% H( R' C6 n& y% v3. 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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