KeerthanaPosted on 6, 12, 20, 30, 42, ? a53 b52 c56 d50 Answer : Option CExplanation : 6 + 6 = 12 12 + 8 = 20 20 + 10 = 30 30 + 12 = 42 Rate This:NaN / 5 - 1 votesAdd comment