Railway Most Important Questions With Tricky Solution|
Maths Vatika App link
https://play.google.com/store/apps/details?id=co.arya.owrzd
Zero to Hero Batch Playlist Link
https://youtube.com/playlist?list=PLVaD97PA-39g7IHkxDTPK9qEvlsfcIH4N
Group d :- https://www.youtube.com/watch?v=sy7rM8C17Y8&list=PLVaD97PA-39hpkiYXZ63BZX5LU2oczjTn
Group d maths short trick
ntpc maths short tricks
railway maths trick