Operations Research (OR) refers to the science of decision making. It uses various problem-solving techniques and methods to analyse system behavior and improve decision-making and efficiency by arriving at optimal or near optimal solutions to complex decision problems. This course provides a fundamental account of the basic results and techniques of Linear Programming (LP), network optimization and integer programming in Operations Research. There is an equal emphasis on all three aspects of theory, algorithms as well as applications, which provides essential optimization concept and background for more advanced studies in Operations Research. Students are expected to have basic knowledge in linear algebra.