Injective Functions (One-to-One classification and algebraic proofs) — IITM BS previous year questions

Injective Functions (One-to-One classification and algebraic proofs) is part of Functions and Classification, Week 1 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.