If you are giving a board exams, competitive exams, entrance exams, school exams, or any other exams I as a brother will suggest u a DR. RD SHARMA’S book for referring mathematics. if you daily solve any 5 examples from rd. sharma books of any chapter. I guarantee you you will be a topper in math in your class. no buddy can beat you in math. if you are in CBSE or ISCE board yo must have a rd sharma’s book for referring math.
please trust me once. and you will become a fan of god of math "dr. rd sharma"