i found the ans in 30 mins but dont know correct or not?
( z9 f4 M! p' S9 ~tvb now,tvbnow,bttvbans is too long! but concepts are something like that:
' [2 }3 r, Z5 ~; ~; r) nseprate 4 groups 3 balls in one group! tvb now,tvbnow,bttvb: B4 M, c7 q' Z; g
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!
, ^6 ?* z2 G# Y! Y+ r$ q( E- Ithe last part is 1ball vs 1ball! something like that |