Hello there!

For eligibility to most MBA entrance exams, you need to have at least 50% % marks or equivalent CGPA in your graduation. So make sure you give balanced attention to both your graduation examinations and your MBA preparations. Before you go ahead with your MBA preparations, you must understand the competencies you MUST have for an MBA entrance exam.

Competencies for MBA entrance exams include your interests, aptitude, skills, personality traits, and knowledge. Before you start your MBA prep, you must understand that these are the strengths that you will have to start with when you begin your preparation for MBA entrance exams. These are certain inherent attributes that are developed through the years of schooling and cannot be cultivated ad hoc only during the year(s) of your preparation for an MBA entrance exam.

Also, for the second part of your answer, your chance of getting into IIMS or non-IIMs entirely depends on how well and strategically you prepare for your MBA entrance exams. But before you begin contemplating your chances, make sure you really are up for a challenge; otherwise, it is better to talk to career experts who can guide you for your alternate career options.

I hope this helped.