https://parveenchhikara.wordpress.com/2016/08/23/jmi-msc-mathematics-entrance-papers/

Go through this link to download previous years question paper for the entrance exam.

The official website of Jamia Millia Islamia is also providing question papers of previous years but it is paid. I'm attaching that link as well.

https://www.jmientrance.com/product-category/post-graduate/