this is too easy!!
# @' v0 `" r y9 E( v3 F& itvboxnow.com
' n- e9 Y9 Q- L. G) g0 }, d! ~1. put 6 at each side.. take the one side which is heavier
( O0 ^/ C3 M" D2. put 3 at each side.. also take the heavier side
6 M, |: E' C9 s( X6 U# e1 P公仔箱論壇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.. |