Limitations of Cramer's rule and when it is applicable — IITM BS previous year questions

Limitations of Cramer's rule and when it is applicable is part of Cramer's Rule, Week 2 in Mathematics 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.