this is too easy!!
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y/ Z q0 e9 H/ t. b) `% F" ttvb now,tvbnow,bttvb1. put 6 at each side.. take the one side which is heaviertvb now,tvbnow,bttvb+ M2 v" Y9 j' H% D5 H0 g5 ^
2. put 3 at each side.. also take the heavier side
; c2 j$ d g' c5 |" D5.39.217.773. 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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