Solution:The pattern followed here is :(2nd number - 1st number) = 8 & 3rd number - 2nd number = 8
(15, 23, 31) → (23 - 15) = 8 & (31 - 23) = 8
(33, 41, 49) → (41 - 33) = 8 & (49 - 41) = 8
Similarly,
(20, 28, 36) → (28 - 20) = 8 & (36 - 28) = 8
Hence, "(20, 28, 36)" is the correct answer.