DFS tree, discovery time, and finish time of vertices — IITM BS previous year questions

DFS tree, discovery time, and finish time of vertices is part of Depth-First Search (DFS), Week 10 in Mathematics 1. Prasnya files every IIT Madras BS previous year question from this subtopic here, each one with a worked explanation. Take the whole set as a timed mock and you get accuracy, pacing and per-question analysis back.