Select the letter-pair that can replace the question mark (?) in the following series.
RJ, XP, DV, JB, ?
Answer & explanation
Correct answer: option 4
Explanation:
RJ, XP, DV, JB, ?
The logic followed here is :
R → (+6) → X → (+6) → D → (+6) → J → (+6) → P
J → (+6) → P → (+6) → V → (+6) → B → (+6) → H
So, the letter-cluster that replaces the (?) to complete the series is "PH"