i found the ans in 30 mins but dont know correct or not?# I: \( M9 |- w
ans is too long! but concepts are something like that:
8 ]: U" K8 I8 f- t. V0 n- A4 L5.39.217.77:8898seprate 4 groups 3 balls in one group! tvb now,tvbnow,bttvb5 ]4 R' C( m& m. |
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!
, `# o6 G1 q& R- Z' H: y$ h" Mthe last part is 1ball vs 1ball! something like that |