Can I do BCA without maths? After BCA, can I do MCA? I'm a PCB student, is there a problem? Will I face any difficulties in getting a job?

Yes, definitely you can do BCA. Some universities might will not give you chance, but you will get chance in some other good universities or colleges. Without mathematics, you can do BCA, but in BCA it needs little bit of knowledge about maths, because among 6 semesters at least in 1 semester you wi