I have a question guys help me???

So I'm arts students...can I do bca!? Am I eligible for that? And also can I prepare for nimcet and get into nit?? Will they accept!? And i have checked online they say they accept for bca... But not having maths in my 11 12th will create difficulties for me? I don't know the ground realities can anyone please genuinely help me in this?? Give me every small detail about this please!!!