i found the ans in 30 mins but dont know correct or not?4 }8 u5 P7 A0 N6 u, |9 [
ans is too long! but concepts are something like that:
2 k2 B: s: t7 Q6 k# u# P1 rtvb now,tvbnow,bttvbseprate 4 groups 3 balls in one group!
- `% g2 G7 c, H7 |: q( Ntvb now,tvbnow,bttvbthe 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!2 |3 R* S3 l8 N$ h& N4 x
the last part is 1ball vs 1ball! something like that |