This book has been written from studies point of view, so that they can easily understand various Mathematical concepts, techniques and tool needed for their course. Each new concept and technique is properly supported by suitable solved examples. In solving the questions Cave has been taken to explain each step so that students can follow the subject matter themself without even Consulting others. I believe that the book should serve specific need of the students appearing in B.Com. (Hons.), B.A. (Eco. Hons.), M.Com., (M.A.) (Eco.) B.B.A., B.C.A., M.B.A. and other competitive examinations. Suggestions and comments for the improvement of the book from readers will be thankfully received and duly incorporated in the subsequent editions.