Which letter will replace the question mark (?) in the following series?
F4, I27, L16, O125, ?
Answer & explanation
Correct answer: option 4
According to the above alphabet position:
F4 ⇒ (6), 22
I27 ⇒ (9), 33
L16 ⇒ (12), 42
O125 ⇒ (15), 53
? ⇒ (18), 62 = R36
(add 3 in 1st alphabet position and there is square and cube of consecutive numbers respectively in 2nd alphabet position)