Dear Aspirant,

If you have your PCM( Physics, Chemistry and Mathematics ) Aggregate marks equal to or greater than 55% then you can very well get admission in JMI-CSE, however, this percentage is the eligibility criteria. To get admission in JMI-CSE, you have to get a good rank in JEE mains.

Since you are open category student and CSE is the top branch of JMI, you'll be needing a very good score in JEE.

Here are few links to help you out:

https://engineering.careers360.com/articles/how-prepare-for-jee-main

https://engineering.careers360.com/articles/jee-main-preparation-tips

https://engineering.careers360.com/articles/jamia-millia-islamia-jmi-btech-admissions

Hope this helps. Thank you.