Which letter will replace the question mark (?) in the following series?
S31T, U37V, W41X, ?
Answer & explanation
Correct answer: option 3
According to the above alphabet position:
S31T ⇒ (19), 31, (20)
U37V ⇒ (21), 37, (22)
W41X ⇒ (23), 41, (24)
? ⇒ (25), 43, (26) = Y43Z
(consecutive alphabet series at 1st and last alphabet position and there is prime number series in the middle)