Hey aspirant

IIT JAM test is conducted for admission to PG and Joint PG degree courses in various disciplines in various IITs.

For M.Sc. in Mathematics, the eligibility is to have a minimum of 55% aggregate scored in the last qualifying degree or 5.5 CGPA scored out of 10 and the candidate must have studied mathematics for at least two years/four semesters during the Bachelor’s degree.

Yes, you'll be able to apply if you score above the minimum eligibility criteria.

Check other details at https://www.google.com/amp/s/university.careers360.com/articles/jam-eligibility-criteria/amp