Hello,
We cant predict the total marks of jee advanced every year. Every year total marks of jee advanced are different. so, 45% marks of the total marks in of jee advanced are required to get ECE into lower IITs. if you more information then you cam go through this link.
https://www.google.com/amp/s/engineering.careers360.com/articles/jee-advanced-cutoff/amp
hope it helps you.
thank you.
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