this is too easy!!
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1. put 6 at each side.. take the one side which is heavierwww3.tvboxnow.com1 f& g2 G; r# L! L9 O; k# F
2. put 3 at each side.. also take the heavier side; m0 N7 {4 T0 ^% ]: [9 A3 ~5 A( n
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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