Hii Javed

Yes it is compulsory for you to have maths as a subject in class 12th boards when you are seeking admissions in the university of delhi's colleges offering bachelor's in commerce /bachelor's in economics (honours) . Maths is compulsory for you to have and the best of four is calculated with maths and English are considered to be the mandatory and other two subjects you scored highest in.

Hope it helps

Thanks