Which of the following numbers will replace the question mark (?) in the given series? 3, 7, 13, 21, 31, ?A43B41C42D44Answer: A. 43 Read Explanation: 3, 7, 13, 21, 31, ? 3 + 4 = 7 7 + 6 = 13 13 + 8 = 21 21 + 10 = 31 Similarly, 31 + 12 = 43.Read more in App