i found the ans in 30 mins but dont know correct or not?: r# Q: K. D1 ~1 s; m+ M8 K' a
ans is too long! but concepts are something like that:tvb now,tvbnow,bttvb( Y% j( M; {: a7 |
seprate 4 groups 3 balls in one group! 0 _8 r1 E5 e+ p
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!+ b, d" [( z8 _
the last part is 1ball vs 1ball! something like that |