Hi Vinod, 

I am assuming you are asking for total seats in all IIMs. So here is the breakup of each IIM

IIM Ahmedabad- 385

IIM Bangalore - 382

IIM Calcutta - 462

IIM Lucknow - 419

IIM Indore - 450

IIM Kozhikode - 375

IIM Shillong - 120

IIM Ranchi - 120

IIm Raipur - 120

IIM Udaipur - 120

IIM Rohtak - 120

IIM Trichy - 102

IIM Kashipur - 90

IIm Nagpur - 60

IIM Visakhapatnam - 60

IIM Bodh Gaya - 60

IIM Amritsar - 60

IIM Sirmaur - 60

IIM sambalpur - 60

IIM Jammu - 60

This is based on last year data. so total seats available are 3685 and the number of test takersare more than 2 lakhs which gives a number of 55 people fighting for each seat.

Hope it helps.

Approximately 3300 seats are available across all IIMs in India and approximately 11000 + students are shortlisted every year based on cutoff and exam difficulty for GDPI process.

Cutoff and seat matrix is shared below. 

https://www.google.co.in/amp/s/bschool.careers360.com/articles/cat-cutoff/amp