R.D Sharma is Gold Medalist In Mathematics. R D Sharma Book series was really Great for all students. My Math’s Teacher refer it for me. According to my sir, if we solve complete R D Sharma, then we solve every question in exam. I also recommended it for all of you. I use it for 10th Exam. It good enough to build our math’s concept. I get 9 CGPA in 10th. It has wide range of question. MCQ, Short type, Long and HOTS(High Order Thinking) questions. Best for all CBSE student’s.