I want to do CA or CS or banking so plz tell me that whether maths is important to take or not
Althogh mathematics in 12th for CA or graduation for CS banking isn't a compulsory eligibilty for yet you should know the fact that both requires knowledge of mathematics. The career you are aslina about is the one in which you will hvae to deal with numbers for life. So you should take maths because it will help you out in building concepts.