MAT Exam 2023 Paper

Concept:In this code, the first and last letters are replaced by their reverse-alphabet pairs, while all middle letters are shifted 3 places backward.Explanation:For $MONTHLY$: first letter $M \to N$ and last letter $Y \to B$ are opposite pairs.Middle letters shift 3 places backward: $O \to L$, $N \to K$, $T \to Q$, $H \to E$, $L \to I$.So, $MONTHLY$ becomes $NLKQEIB$.Apply the same pattern to $ANNUAL$.First letter: $A \to Z$.Last letter: $L \to O$.Middle letters: $N \to K$, $N \to K$, $U \to R$, $A \to X$.Combining these gives $ZKKRXO$.Answer:Option C: $ZKKRXO$.