Some colleges don't require math in 12th grade for admission to BCA programs. However, private colleges may require good scores on entrance exams like CUET or IPU CET but these tests included math up to 10th grade.to do well in the quantitative aptitude section of the entrance exam you need to study maths as BCA COURSE deals with science and maths together you may skip maths in entrance exam but in BCA course it is not avoidable.