Variance of binomial: Var(X) = np(1-p) — IITM BS previous year questions

Variance of binomial: Var(X) = np(1-p) is part of Binomial Random Variable (L11.2 - L11.3), Week 11 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.