Select the option that can replace the question mark (?) in the following series.
FM61, EK58, DI55, CG52, ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. BE49.
F - 1 = E, E - 1 = D, D - 1 = C, C - 1 = B
M - 2 = K, K - 2 = I, I - 2 = G, G - 2 = E
61 - 3 = 58, 58 - 3 = 55, 55 - 3 = 52, 52 - 3 = 49