Once
you join or like this page or links, you'll be able to connect with and will know how to solve lengthy maths sums quickly.
Link
https://www.facebook.com/mathsbooks
https://www.facebook.com/pages/Maths4iitjeesuccess/175341532511480
Also open the attached file of maths short tricks in PPT.
Administrator.
www.iitjeesuccess.com