this is too easy!!
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1. put 6 at each side.. take the one side which is heavier
4 c6 j$ ?% ?' i/ y3 r! q& I2. put 3 at each side.. also take the heavier sidetvb now,tvbnow,bttvb" Y% j4 p) B" n- Z3 E( n' ?/ 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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