dustking

i found the ans in 30 mins but dont know correct or not?公仔箱論壇9 ~4 F) j7 L1 n6 V
ans is too long! but concepts are something like that:
+ c. H  |$ ^) t公仔箱論壇seprate 4 groups 3 balls in one group! 5.39.217.76; j3 m' q) |; J; J
the important part is the 2nd times which need to find out the fake ball is heavier or lighter by use the normal ball that u find at the first time!
/ g9 s' Z, j! H, z: x, Y# I6 mthe last part is 1ball vs 1ball! something like that