In 12th I was from Science stream .and maths was Not my subject.My subject was Psychology,Biology.I didn't gave CET.Cn I get admission 4 BBA

Of course why not if u r 12th pass you can do BBA here is details: BBA is a course where a student learn how to manage business,administration. Eligibility for bba is that a candidate must be class 12 pass in any stream with min.50 percent marks.