how can I get previous year jee main entrance paper with answer key?

Hi,

Yes, you can surely get the previous years JEE Mains questions paper along the solutions. You can also get February and March session question papers too along with the solutions. These question papers will help you to familiarize yourself to the exam pattern and the kind of questions that are asked in the examination. Along with that, they will help you to prepare yourself and improve your time management too.

Here is a link that where you will get all the question papers along with solutions: https://engineering.careers360.com/articles/jee-main-question-papers

I hope this helped you.