i found the ans in 30 mins but dont know correct or not?
9 W/ k D' G, x3 ` N, ]ans is too long! but concepts are something like that:
1 e' K) Q# [: `8 P, rtvb now,tvbnow,bttvbseprate 4 groups 3 balls in one group! 5.39.217.76$ X, F* {+ L/ U% O3 p, R8 c
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!! ?3 j. y2 U! _; V) B: R( q" W
the last part is 1ball vs 1ball! something like that |