Dear student,

you need to have maths as a subject too in 12th only then you can go for BCA(Bachelor's in Computer Applications). Moreover, some colleges give admission to medical background or arts background too. You can enquire from the respected college you wanti enroll. Generally its is not possible. If you had computer as one of the subjects in your class 12th, yes then you definitely can pursue BCA. Feel free to drop any such queries.

All the Best!!