Adjacency matrix - O(V^2) space; O(1) edge lookup — IITM BS previous year questions

Adjacency matrix - O(V^2) space; O(1) edge lookup is part of Graph Representation, 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.