IGNOU - Indira Gandhi National Open University

Yes, you can apply for the MCA course at IGNOU. If meeting the eligibility criteria as given below.
Eligibility: Any Bachelors's degree of minimum 3(three) year duration from a recognized University AND Mathematics as one of the subjects at 10+2 level or graduation level; else the student is required to pursue and pass the BCS-012 course concurrently with IGNOU MCA.
If you had studied Maths at +2 or graduation level, then you need not register for BCS-012.

For doing M.A. In economics, the candidate must have completed graduation with a degree in B.A. In economics with minimum 50% marks.