Hello Sairaj,
To be honest it is the very good scoring 450-500. and the way to score 600+ is through the following ways:
1. find the reason for your incorrect answers, is it because of lack of subject, or because of performance in exam or because of time management
2. go thoroughly with the Akash test series. it helps you a lot..
and there would be even questions which are out of the akash, so you need to just learn the concept of the questions.
go through more sample and question papers.
Hope it helps.
All the best.
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