Hey there!
Based on previous years cutoff of the college and your ranking , chances of you getting the St. Johns Medical College are slim. But you can look into other great colleges since your rank is great. You can use the careers360 neet college predictor to get a prediction of colleges based on your ranking. Find the link attached below
https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer
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NEET Rank Predictor - Know your expected NEET 2020 Rank by using the C ...
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