Marks aren't the only factor that is responsible for the rank in the exam, but the “no. of students are”.

Greater the no. of students applying for the same course, greater the probability of getting low rank( if marks are low).

You should focus on maximum marks, you can achieve.

Even 10000 isn't considered good,if you want to get admission in a good college, give your best and get good marks.

As per your rank, you can't get JIMS. Hope its clear!