Hello,
What are your subjects in Class 11th and 12th? If you have Mathematics, you can opt for Graduation in the subject. B.Sc Mathematics is a good option which you can opt for.
Colleges offering B.Sc Mathematics are
Ramjas College, University of Delhi
Hindu College, University of Delhi
Lovely Professional University

Eligibility Criteria and admission process vary from college to college and while selecting any college various factors are considered such as the location, admission process, placement records, fee structure, etc. If you are looking for colleges in any particular state do let me know so I can guide you accordingly.
Good Luck!