The series follows a pattern where each letter is moving backward in the alphabet by increasingly larger steps: - From Z to Y: 1 step back - From Y to X: 2 steps back - From X to V: 3 steps back - From V to S: 4 steps back Following this pattern, the next letter should be 5 steps back from S: - S → R (1 step) - R → Q (2 steps) - Q → P (3 steps) - P → O (4 steps) - O → N (5 steps) So, the next alphabet is N. Answer: A i.e. (N)