Hello aspirant!

Hope you are doing well.

Since you have not mentioned the complete details in the question, I am assuming that you have mentioned your JEE Mains percentile.

With 77 percentile, your marks scored should be in the range 41-50 and your rank should be in the range 166000 - 246089. But this prediction is only based on previous year trends. The marks, ranks and cut-offs vary from year to year based on various factors like the number of students appearing for the exam, difficulty level of the exam, etc.

Hope this helps. All the best.