Hello,
The eligibility criteria to study Bachelors of Computer Application (BCA) is that a candidate must have passed 10+2 with Mathematics as compulsory subject from a recognized board. Each college has different minimum percentage requirement so you need to fulfill the eligibility requirements laid by the institute in which you are seeking admission. So if you have studied Mathematics in 10+2 level you can study BCA. Computer Science in 10+2 is not a mandatory subject to be eligible to pursue BCA. The admission may depend on marks scored in qualifying examination or entrance test.
Here is the link where you can check the list of colleges offering BCA course
https://it.careers360.com/colleges/list-of-bca-colleges-in-india
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