this is too easy!!
$ f7 C+ |! U4 m0 y& [1 F1 `
6 F& F9 d7 v8 ]; _1. put 6 at each side.. take the one side which is heavier
! d3 r; ^9 d4 L Y, \2. put 3 at each side.. also take the heavier side公仔箱論壇8 V' M! R3 B& l: V* W* Y& Y
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
| 
