1 , 5 , 11 , 19 , 29 , 41, ___A48B58C51D55Answer: D. 55 Read Explanation: 1 + 4 = 5 5 + 6 = 11 11 + 8 = 19 19 + 10 = 29 29 + 12= 41 41 + 14 = 55Read more in App