Enriching contents of the book in the Second Edition, the author proffers a thoroughly revised and updated text with main focus on Game Theory, Linear Programming and Output–Input Analysis. Besides he gives due weightage to the topics on International Trade, Decision Theory, Pricing Policies in Practice and Basics of Econometrics for Estimation of Economic Functions—by introducing them as independent chapters in the present edition. The concepts have been introduced keeping decision-makers in mind, who may be associated with the corporate world or pursuing management courses offered by various institutes in India and abroad. The mathematical treatment of the topics, which is one of the distinguishing features of the book, is facilitated in a student-friendly approach. Primarily intended for the undergraduate and postgraduate students of commerce, economics and management, the book is a comprehensive text in accordance with the syllabi of B.Com, B.Sc (Economic Hons.), M.Com, M.A. (Economics) and Master of Business Economics (MBE) courses. Besides academic pursuits, the book will also be useful for the aspirants of competitive examinations such as Indian Administrative Services (IAS), Provincial Civil Services (PCS), and Indian Economic Services (IES).