Which letter will replace the question mark (?) in the following series?
D17E, E19F, F23G, ?
Answer & explanation
Correct answer: option 3
According to the above alphabet position:
D17E ⇒ (4), 17, (5)
E19F ⇒ (5), 19, (6)
F23G ⇒ (6), 23, (7)
? ⇒ (7), 29, (8) = G29H
(consecutive alphabet series at 1st and last alphabet position and there is prime number series in the middle)