This is one of best book for Mathematics. It thik reference book. Here I have found very different questions from NCERT book. By refering the book students can easily score a good mark in the examination. In our area all the schools refer the R.D Sharma book for Mathematics for examination. Because of R.D Sharma book I have 69/80 marks in9th class. There are many different question. I will suggest all of you to refer the R.D Sharma book for mathematics in the examination.