Row totals and column totals in joint-distribution tables — IITM BS previous year questions

Row totals and column totals in joint-distribution tables is part of Marginal Distributions, Week 1 in Statistics 2. 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.