Hello Ravi,

To apply for JAM,one should hold a Bachelor's degree. The aggregate marks will be 55% for for Gen,OBC-NCl and 50% for SC/ST/PwD. If selected, you will get an opportunity to enter into the IIT's and IISC Bangalore. There is no upper age limit also. So there is no limit for the number of times one an appear for the exam.

Hope this helped. All the best!