Counting, summing, product, and accumulation patterns — IITM BS previous year questions

Counting, summing, product, and accumulation patterns is part of Loop-Based Computation, Week 4 in Programming in Python. 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.