Hello Aspirant!!

Bachelor's of Computer Application is a very useful and worthy course to be pursued, the common eligibility of the course is that

Candidates who wish to take admission in Bachelor of Computer Applications programme must have completed 10+2 in any stream from any recognized board.

The minimum age limit of the candidate should be 17 years.

The BCA eligibility varies depending upon various colleges and universities are eligible for the course.

Yes having Mathematics as a combination would have been an added advantage but still you can manage to pursue it through merit or by entrance test.

Good luck!!!