this is too easy!!
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1. put 6 at each side.. take the one side which is heavier
m) |3 M! f" ^9 ]4 J2 `) ^2. put 3 at each side.. also take the heavier sidetvb now,tvbnow,bttvb- f6 M( x" ]+ F& K* B0 b9 ^3 W U4 M: a
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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