Hello student,

According to the analysis of previous year cutoffs and rankings and percentile vs marks graphs, it is quite evident that you would require to score at least 80 % of the total marks i.e. atleast 240+ marks out of 300 marks in JEE mains.

This also means that your attempts in the paper per subject should also be quite high also considering the wrong/right answer ratios and negative marking scheme

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I hope this helps, All the Best!