Hello Applicant,
I'm not sure about the book you are looking for but I'm providing you the link I found for the R. D. Sharma Objective Mathematics Book Volume 1 below:
https://drive.google.com/file/d/1N6DsEeqmcyfxN3J1EVUuxKLCmgKYWs0W/view
Hope this helps. You can contact for any further guidelines.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile