Hello,

In order to appear for banking exams, you need to pass graduation in any discipline from a recognized university, there is no specific aggregate requirement regarding this unless you want apply for RBI Assistant or NABARD Grade B Officer where 50% aggregate is required, and in case of RBI Grade B Officer, 60% is required at 10th, 12th and graduation, in recent years the competition as well as the level have increased a lot in banking exams, speed and precision is the key to crack banking exams, and practice is must in this case, so first be acquainted with the syllabus, and develop conceptual understanding especially in case of quantitative aptitude and reasoning, and this is something that will come with practice, if you feel the need to join coaching then do so, but remember that coaching is just for guidance eventually it's you who have to put efforts, as you've passed 12th, hence there is still lot of time left and if you start preparation even in gradual yet consistent manner, you'll definitely succeed in your attempt, if you need any other information you can mention the same in the comment section below.