The text is an excellent exposition of the essentials of Discrete Mathematics. This book is a product of long experience of teaching the subject in M.C.A. and B. Tech. courses in Calcutta University and the Institute of Engineering and Management for a number of years. The contents include propositional calculus, number theory, permutations and combinations, probability theory and graph theory. The groups, rings, fields and integral domains have come up for discussion as natural habitats of the domain of discrete mathematics. A sufficient amount of theory is included for those who enjoy the beauty of development of the subject and a wealth of applications as well for those who enjoy the power of problem solving techniques. Hopefully the students will benefit from the nice balance between the two. Apart from this the students will also enjoy the solved problems demonstrating various techniques.