no worries you can take admissionin bcom hons. evenif you have drope the maths subject in 12 th. i am not cinfirmed for du but  you can take admission in ip university by giving the entrance exam and scoring the good rank then the counseloing process will start and the college will be alloted to you as per your rank. so need not to worry you can go for b.com hns. all the best. have a great future ahead.