find the missing number in the following series- a- 79,87,?, 89, 83 b- 37,41,?,47,53 Share with your friends Share 1 Manbar Singh answered this a.The given series is :79, 87, ? , 89, 83The above series is combination of 2 series :i. 79, ? , 83 ii. 87, 89The pattern followed in both the series is adding 2 to the the previous term to obtain the next term.Hence, the missing number is 81.Kindly ask the remaining query in different thread. -2 View Full Answer