MCA

Yes, you can pursue BCA without any problem. Students from every stream can pursue BCA in almost every other college. Some universities set up their criteria that arts stream students can't pursue BCA or students from non-mathematical background too can't pursue BCA. But there are many universities which will provide admission to arts and non-mathematical students too in BCA. So, you have to find that college/university which is willing to provide you admission. The general eligibility criteria for BCA is that you should score atleast 45% in your +2. If you are able to satisfy this requirement then you can pursue BCA without any issue. If you want to learn programming languages which you will be studying in your BCA course then you can check out this app which is specially designed and developed for BCA students. It has programs and assignments of languages like C, C+ and Java with their outputs. You'll be studying these languages in your 3 years of BCA.

Yes, you can. Please check the eligibility of MCA
Graduation in any stream is the basic eligibility for MCA. The eligibility for qualifying marks in graduation differs from institute to institute. Most of the institutes require 45 to 50 % aggregate in qualifying exam for taking admission. Reserved categories get some relaxation in aggregate percentage. Apart from this there is another prerequisite for taking admission to MCA degree; one must have studied Mathematics in 10+2 as a compulsory subject. Procedure:
Admission can be obtained either on the basis of entrance exams or directly on qualifying exam merit basis.
1. Direct Admission- Direct admissions are done on the basis of merit in qualifying exam. Some institutes also provide admission on management quota, which is also way of direct admission. Management quota seats in every college are reserved. Fee is generally higher for these seats than general seats.
2. Entrance Test- After taking entrance test conducted by various universities, qualified students are called for counselling. Counselling is conducted for seat allotment in various colleges under that university. Admission is done after allotment of seat in counselling.