Find the missing term :- 3, 15, ?, 63, 99, 143

A. 27

B. 35

C. 45

D. 56

Answer: Option B

Solution(By Examveda Team)

The terms of the given series are (2² - 1), (4² - 1),................,(8² - 1), (10² - 1), (12² - 1)
So, missing term = (6² - 1) = (36 - 1) = 35