Hello, this is the R D Sharma math book I had when I was in class 11, but it wasn't used much so it's still in a very good condition (almost like new, see the pics)!

*Book Details*

Author - RD Sharma
Class - 11
Publication - Dhanpat Rai Publications
Edition - 8th revised edition (2019)
Based on CBSE

Hope my book helps you! :)