Select the term that can replace the question mark (?) in the following series.
U9Y, R14V, O24S, L44P, ?, F164J

Correct option is D

Given series: U9Y, R14V, O24S, L44P, ?, F164J
First letters: U → R → O → L → ? → F
The difference between consecutive letters is 3 positions backward in the alphabet:
U (21st letter) → R (18th letter) → O (15th letter) → L (12th letter).
The next letter should be I (9th letter).
Numbers: 9 → 14 → 24 → 44 → ? → 164
The pattern for numbers seems to be increasing by a progressively larger amount:
14 - 9 = 5
24 - 14 = 10
44 - 24 = 20
The next difference should be 40 (following the doubling pattern: 5, 10, 20, 40).
So, 44 + 40 = 84.
Last letters: Y → V → S → P → ? → J
The difference between consecutive letters is 3 positions backward in the alphabet:
Y (25th letter) → V (22nd letter) → S (19th letter) → P (16th letter).
The next letter should be M (13th letter).
So, the missing term is I84M.
The correct answer is (d) I84M.