Combinations with restrictions - at least / at most conditions — IITM BS previous year questions

Combinations with restrictions - at least / at most conditions is part of Combinations - Advanced Applications (L6.3), Week 6 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.