i found the ans in 30 mins but dont know correct or not?tvb now,tvbnow,bttvb+ s: G2 } `! g: |8 C) z
ans is too long! but concepts are something like that:
9 a0 y( w" z) J" Y! E% ?seprate 4 groups 3 balls in one group!
$ u+ _; J3 o c+ ^. b8 J5.39.217.77:8898the 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!
9 a' d) E, t2 ~5.39.217.77:8898the last part is 1ball vs 1ball! something like that |