Hello Rajveer

Admission to the B.B.A. Course shall be made on the basis of Merit List prepared on the basis of an entrance test and viva-voice examinations to be conducted by the college. You can get more information about BBA program here https://www.patnacollege.org/BBA.html

For BA in Computer Application the process is almost same.  Admission to the B.A. (H) in Computer Applications course will be made on the basis of Merit list prepared on the basis of entrance test and vice-voce examination to be conducted by the College / Department. You can get every information related to this course here https://www.patnacollege.org/BCA.html

Hope This Helps

Best Wishes For You!