Hello Ashu,
the eligibility criteria of DU states that the candidate must secure a minimum of 60% aggregate at 10+2 level in four subjects including English, Mathematics and other two subjects for both BBA-FAI and BMS(DU provides BBA-FAI).
The selection criteria for both the courses is  through Joint Admission Test(JAT) and Group discussion/personal interview. The weightage of Joint Admission Test (JAT) and GD/PI is 85% and 15% respectively.