this is too easy!!" s8 I/ O0 ~# j, U# L+ K+ B" M
- P. u9 S Z4 p2 D& f1. put 6 at each side.. take the one side which is heavier( x) H% e' Q! j: A @
2. put 3 at each side.. also take the heavier side" C0 S6 c$ X, L2 w% X% 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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