this is too easy!!9 ^4 F/ i8 K5 y! s/ a: g
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1. put 6 at each side.. take the one side which is heavier公仔箱論壇5 ]. M0 v0 V5 d( T" W
2. put 3 at each side.. also take the heavier side
. [' Z3 [# c* W/ S# h公仔箱論壇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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