Hi,

Maths is very important for any competition exam. Because it use every where in exam not only in math section.

To improve your math skills for Delhi Police.

I'll advice you to prefer Rs agarwal for that.

Such a nice book and beautiful explained.

For more detailed information kindly go through this link :

https://www.google.com/amp/s/news.careers360.com/delhi-police-recruitment-2020-apply-for-5846-constable-posts-soon-delhipolicenicin/amp

I hope it helps you.

Happy learning!!!