Dhanpat Rai Publications Dhanpatrai Publications Pvt. Ltd., a Delhi-based firm, is primarily involved in the publication of books authored by SandeepGarg and R.D. Sharma. The company publishes ‘Theory and Problems of Linear Algebra’ by R.D. Sharma, and Mathematics for Class VI, VII, VIII, IX, X, XI, and XII by R.D. Sharma. ‘Objective Mathematics’ for JEE-MAIN and other engineering examination by R.D. Sharma is also a bestseller by this publication. Click here to view all book of this publisher