We have seen economics has emerged not only as a vital resource for country's development and progress, but also a distinct institution of modern civilization. Economics is the oldest subject among the social sciences. There are thousands of book on this important Subject. But present book is different from other books because present edition of the book is an attempt to present the whole subject of economics in a simple, lucid and comprehensive manner. The book covers a wide range of  materials at one place in a simple, lucid and comprehensive manner. There should be no hesitation to assert that economics is well on its way for being reckoned, sooner or later, amongst the highly regarded subject in our modern economy. A complete book on the subject covering the entire syllabus of B. Com., B.A., B.B.A., M.A., M.Com., M.B.A., and other competitive examinations.