Correct Answer - Option 2 : 49
The pattern followed here is:
Each number is the square of the natural number and successively starts from 2.
Given Series: 4, 9, 16, 25, 36, ?
(2)2 = 4
(3)2 = 9
(4)2 = 16
(5)2 = 25
(6)2 = 36
(7)2 = 49
Hence, 49 is the correct answer.