this is too easy!!4 G1 N2 Q# l9 M4 j
' z- {4 Y' z: L
1. put 6 at each side.. take the one side which is heavier
! M' F( i6 a2 u. L6 \2. put 3 at each side.. also take the heavier side
- R2 z4 D: L/ \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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