Previous year's papers provide us with an indication of which subjects to concentrate on and how in-depth one should study. The objective of the syllabus, as well as the previous year's questions, is to streamline one's preparation along the required lines. 2010 onwards is a great base to start solving previous year question papers as they give us an understanding about the type of questions that can be asked in the exam. So go and download the free papers available at Vedantu’s website and app.