The purpose of the book is to provide technique of salient mathematical and statistical methods widely used by economists and managers in various contexts. The contents and methodology of this book have been tested over the past three decades and more. Each chapter gives a concise presentation of concepts and theories which are illustrated and simplified with the help of examples and solved problems. As the book is intended for the beginners, although a wide range of topics have been covered the treatment is kept at the elementary level. The students will easily engage with the subject once they start reading the chapters and practice the unsolved questions.