Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
PNNA, RPPE, TRRI, VTTO, ?
Answer & explanation
Correct answer: option 4
Explanation:
PNNA, RPPE, TRRI, VTTO, ?
The logic followed here is :
P → (+2) → R → (+2) → T → (+2) → V → (+2) → X
N → (+2) → P → (+2) → R → (+2) → T → (+2) → V
N → (+2) → P → (+2) → R → (+2) → T → (+2) → V
A → (+2) → E → (+2) → I → (+2) → O → (+2) → U
So, the letter-cluster that replaces the (?) to complete the series is "XVVU'