Dear Aspirant,

Both books are good but are not enough. Try to solve one book completely rather than searching for new books. switch only when you have completed on book or else you will not be able to complete the syllabus.

Also, do read NCERT textbooks once. They have some pretty good questions and concepts. Many questions in many competitive exams are in fact from NCERT textbooks.

Hope this helps.

Here are a few links for you:-

https://engineering.careers360.com/articles/bitsat-2019

https://www.careers360.com/exams/bitsat

Thank you.