While covering the usual text material of Operations Research, additional features of the book are: Presentation of tabular form in Simplex methods in most natural order, revised simplex method with direct inverse matrix, 0-1 programming method, getting single loop from more than one loops in salesman problem, display of each step in sequencing problem, scrap as function of time in replacement problems, natural examples in decision analysis, PERT with restriction of number of workers, maximization in transport and assignment problems, Wolfe's method in quadratic programming, derivation of all standard results in inventory, queuing begins with Exponential, Poisson and Erlang probability distributions, queuing with priorities and questions asked in various examination are solved examples.