Am I eligible for admission with 83% in 10,74% in 12,91.32% in mat but less than 50% in graduation?

No it is not possible to get admission in Amity Business School with less than 50% in Graduation. It is cleary written on the eligibility criteria that you shoul have atleast 50% marks in Graduation. But for further enquiry you can personally visit the live chat sessions on Amity.edu with your query