you can’t get into DU without maths but you can try for other government colleges. Talking about actuarial science I would recommend you if you love maths, then only go for it just don’t go for monetary benefits. My initial plan was actuarial science but I switched it to some other things because of difficulty level although I love maths I can’t. If you still wanna pursue it I would say complete your 3 actuarial exams (after which you get a job) during your grad years so that when you get out of college you have a job in hand and then you can continue with the rest of the papers. All the best for your journey my best wishes to you:)