RRB Group D 1 Dec 2025 Shift 1 Solved Paper

Concept:Apply the given coding conditions step by step to the group $9\ 6\ @\ 7$ and update the codes accordingly.Explanation:The group has five elements: first (symbol, coded as $P$), second ($9$, original code $U$), third ($6$, original code $K$), fourth ($@$, code $B$), fifth ($7$, code $G$).Original sequence: $P\ U\ K\ B\ G$.Check condition (i): second element $9$ is a perfect square, third $6$ is not. Condition fails, so no interchange.Condition (ii): first element is not an even number, third $6$ is even but both must be even numbers. Condition fails.Condition (iii): second $9$ and third $6$ are both multiples of $3$. This condition applies: the third element takes the code of the second element.Thus third element's code changes from $K$ to $U$.Final codes: $P$ (first), $U$ (second), $U$ (third), $B$ (fourth), $G$ (fifth).Answer:$P\ U\ U\ B\ G$