Hello,

To be eligible to appear in IIT JAM a candidate must  have bachelor's degree with atleast 55%(General/OBC category) aggregate or 5.5 CGPA on a 10 point scale for SC/ST/PWD it os 50% aggregate or 5.0 CGPA on a 10 point scale.And for admission in M.Sc Mathematics a candidate must have studied Mathematics for atleast 2 years or 4 semesters in bachelor's degree.For admission in M.Sc Statistics a candidate must have studied statistics for atleast 2 years or 4 semesters in bachelor's degree.

So, your bechelor's degree is considered here and you are eligible if you have studied Mathemactis/Satistics for 2 years or 4 semesters.

You can refer the link below for other detailed information

https://university.careers360.com/articles/jam-eligibility-criteria