dustking

i found the ans in 30 mins but dont know correct or not?5.39.217.77/ H- D5 m! w2 R% X4 t
ans is too long! but concepts are something like that:5.39.217.77+ T  ~* A6 g) f- j1 k% d, ^) e8 j
seprate 4 groups 3 balls in one group! 6 F- M) i  l: s7 v
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!
+ l1 P3 E/ K- O5.39.217.77the last part is 1ball vs 1ball! something like that