Solutions to Maths sample papers SA2 - 2016/2017- Class 10

Request you to kindly provide with the solutions for class 10, sample papers SA2 - 2016-2017 for Maths. The solutions for the following sample papers are not available at your site. Request you to kindly provide me with the answers. Thank you.
Sample Paper No. 4
Sample Paper No. 8
Sample Paper No. 12
Sample Paper No. 13