Not at all related to business analyst. Basic math (std 6-8) and english (again basic). If you can talk you are hired. The interview was day long. My turn came at the end of the process. First the HR will talk tell you that its a night shift job (for men specifically), you will be getting night allowances, one way cab, etc. Then comes the written test, very easy no explanations needed. then the final 1:1 with manager.