This book covers topics on Operations Research and Quantitative Techniques mostly used for managerial decision making. The book covers syllabi of most of the universities for MBA, PGDM, MCA, Commerce and Engineering courses and can be used as a textbook as well as a reference book. It adopts a practical approach in explaining the key concepts, so as to be equally suitable for the management students with different backgrounds from commerce to computer engineering. It is also a suitable source of reference for all the managers and engineers besides students.The book not only explains the concepts and provides a variety of solved problems that are necessary for preparing for examinations, but also helps students to develop insight and interest in solving problems using MS Excel. This would help students to use statistical tools during their work-life to solve complex real-life managerial decision-making situations.