this is too easy!!
1 q5 }4 D. y% A7 i3 ~. D7 Q" I1 u. I' f, i) D$ z. ]! K
1. put 6 at each side.. take the one side which is heavier% W$ |/ J7 U+ h7 k$ I# F" `# o
2. put 3 at each side.. also take the heavier side5.39.217.77" o* E* v: K1 c
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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