Which letter will replace the question mark (?) in the following series?
W8, S27, Q64, M125, ?
Answer & explanation
Correct answer: option 3

According to the above alphabet position:
W8 ⇒ (23), 23
S27 ⇒ (19), 33
Q64 ⇒ (17), 43
M125 ⇒ (13), 53
? ⇒ (11), 63 = K216
(Prime number in descending order in 1st alphabet position and there is cube of consecutive numbers in 2nd alphabet position)