Mathematical Brains

Hello friends,
I am Raj Kumar Sharma ( R k Sir ) and I have been teaching maths for 10 years approx and I have made this channel so that I can help with your study for mathematics.I will be teaching on this channel for class 9 th, 10th, 11th, 12th classes.
So, I request all of you to subscribe to this channel Mathematical Brains and enjoy your study.