Hi Neha,

You can download MAT sample papers from the below links

https://bschool.careers360.com/download/sample-paper/mat-previous-year-solved-paper

https://www.entrancecorner.com/bschool/mat-sample-papers-practice-papers/

Regarding the colleges to apply through ATMA, the scores of ATMA are accepted by many Management institutes. Refer the below link to know about colleges to apply through ATMA.

https://bschool.careers360.com/colleges/ranking/2017/top-mba-colleges-in-India-accepting-atma-score

And ATMA follows no reservation.

Regarding preparation for ATMA & MAT, as few days is left for the exam I would suggest you to go through the previous year papers as you will know the structure as well as level of questions asked in different sections. Learn the basics and keep your focus on preparation.

Good luck!!!