Dear Student,
Yes you are surely eligible for getting admission in Bsc. Maths having 72% in 12th as the minimum eligibility criteria of most of the colleges range between 50 - 60% which you surely exceed. You can get admission in Bsc. Maths taken that you had Maths as subject in your 12th mandatory. If you fulfill the eligibility criteria you can apply for any private or government college as per your preference. Hope this might help you.