this is too easy!!. A% n" D) S2 z' |, [& A$ y
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1. put 6 at each side.. take the one side which is heavier
; {2 F, K8 ~2 w, j* \# u, j' c: N5.39.217.762. put 3 at each side.. also take the heavier side+ C. E2 f8 w% v
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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