this is too easy!!
8 q$ }/ Q6 u3 O1 n) L) C o% m1 j0 U公仔箱論壇' t7 P- I: I5 ^- G' W N2 k
1. put 6 at each side.. take the one side which is heavier! i) [! B2 w, b1 g
2. put 3 at each side.. also take the heavier side
2 C2 E9 Q( m" s3 m# O! Z0 xtvb now,tvbnow,bttvb3. 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
| 
