Hello Chaitanya,
There are lots of books for quantitative apptitude. You can go for Quantum CAT by Servesh Kumar, Quantitative Aptitude RS Agrawal is also good but lacks of some innovative aporoach, how to prepare for Quantitative Aptitude Arun Sharma is also good.
Quantum CAT is best among these. Arun sharma can be 2nd option.
Good Luck.

Hi Aspirant,
There are a lot of good books to prepare for Quants.
One of the most common books is How to Prepare for Quantitative Analysis by Arun Sharma.
Also,there are other books and what's important is you should try to focus on the concepts and tricks involved.
Hope this helps.