Hello Aspirant

The eligibility criteria for opting for math in graduation or post-graduation is that you should have math in your 12th grade along with the Science stream (Physics, Chemistry, Math, and Biology is not required). Also, a student must have acquired a 50% -55 % aggregate in their previous degree in Math (12th for graduation and graduation for postgraduate).

For Arts students, it is not possible to do so because they usually don't have Math as their subject. So, you can either select Math as your subject (5th or 6th subject) in 12th, if you still have the option to do so, or may be drop the idea.

Hope it cleared your doubt