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It is mandatory for the candidate to either score minimum 75% marks (65% in case of SC, ST and PwD candidates) in Class 12 or equivalent exam
Until last year, candidates of more than 25 years were not eligible.
futher details go through ths link
Congratulations for the score. your eligibility for advance depends on your all india rank which will be out in may as expected. But you can predict your rank by using Careers360 rank predictor tool and it is available on the website and easy to use. here is the link below.
I hope this helps.