Complete the series: 6, 11, 21, 36, 56, ?
Q1. Complete the series: 6, 11, 21, 36, 56, ?
Answer: 81
Explanation: The pattern is obtained by adding 5, 10, 15, 20, 25, ... to the previous term, so 6 + 5 = 11, 11 + 10 = 21, 21 + 15 = 36, 36 + 20 = 56, 56 + 25 = 81.