Dear Ankita,

Eligibilty criteria for IIT JAM are

• Candidates should have secured at least 55 % (SC/ ST/ PwD - 50%) marks in aggregate of subjects including languages and subsidiaries of all the years combined.
• Candidates need to note that equivalence of marks in case of grades in letter/ CGPA will be decided by the participating institutes of JAM.
• Candidates will need to submit their proof of qualifying degree examinations by September 30, 2018 to the admitting institute.

To know more, check: https://university.careers360.com/articles/jam-eligibility-criteria