dustking

i found the ans in 30 mins but dont know correct or not?
( W6 z: B* ~; J+ ?0 oans is too long! but concepts are something like that:5 k* W& i; Z! m! X0 E( a
seprate 4 groups 3 balls in one group! * g$ G$ V/ W8 z) O- K" `
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!) T& V" h8 R9 o0 u+ _- \
the last part is 1ball vs 1ball! something like that