The opening rank for IIT Delhi for CSE branch is 7 and closing rank is 12. This says that the cutoff is really low and very hard to get. In terms of marks, you have to score more than 95% of total marks.
to get into jee advance you have to score high in jee main too. If you have any categorical reservation then that would be a bit more helpful.
If not then you have to work very hard and practice lots of questions and be experts in them. Like you can solve any question accurately given to you.
Hope it helps!
Feel free to comment if you have any doubt
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