this is too easy!!
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1. put 6 at each side.. take the one side which is heavier$ N; o Y! d- d1 w6 D5 E2 F& W8 E# v
2. put 3 at each side.. also take the heavier side8 P2 g* K0 y& Z' k4 }% 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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