Across all 21 IIMs, there are approximately 5,000–6,000 seats available for the flagship two-year MBA/PGP programs combined (the exact number may vary slightly each year due to seat expansion). Older IIMs like Ahmedabad, Bangalore, and Calcutta have larger batch sizes compared to newer IIMs. Given that over 2 lakh candidates appear for CAT annually, the seat-to-candidate ratio makes the selection process highly competitive.