Choosing when to apply permutations vs combinations — IITM BS previous year questions

Choosing when to apply permutations vs combinations is part of Permutations and Combinations - Applications (L5.6), Week 5 in Statistics 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.