Hello aspirant,

You didn't mention your category which is an important factor of determining your college and group. However I'm providing the details of all categories,

For 20000 rank,  to get Cse at Gayathri Vidya parishad, you must be from sc, st, Bc-C, Bc-E categories then only you can get a seat based on your rank. For other categories, it will be difficult to get Cse at 20000 rank.

For Anits, with 20000 rank the chances are good for the categories Sc, St, Bc-A, Bc-B, Bc-C, Bc-E.Incase if you belong to other category, then chances are very low.

Kindly note that this information is based on previous year cutoff and variations occur from year to year.

For more details regarding the colleges which you can get based on the rank you scored, go through the following link,

https://www.careers360.com/ap-eamcet-college-predictor?ici=cp-listing_root&icn=AP-EAMCET-College-Predictor

Hope this helps

Good luck