What comes next in the series: 2, 6, 12, 20?
Q1. What comes next in the series: 2, 6, 12, 20?
Answer: 30
Explanation: The pattern of the series is obtained by adding 4, 6, 8, ... to the previous term. So, the next difference should be 10, making the next number 20 + 10 = 30.