There are some direct admissions for students on the spot admission.

Numerous students who don’t appear for the entrance exam take admission through backdoor admissions. One of my friends who were at SHUATS told me that in his class he had only 180 seats including ICAR seats but later he learned there were 216 IDs. 

However, this might not be true as there is officially no management quota at the institute. You should try to work hard and get a decent rank.