this is too easy!!0 u3 @' G) t" |0 q. E3 @
公仔箱論壇1 r' Z5 \% M0 j, K, b) \
1. put 6 at each side.. take the one side which is heavier. t) ?9 G( M/ I! g8 ?
2. put 3 at each side.. also take the heavier side公仔箱論壇& q( _- T j' v, U. b, T
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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