The process of determining the best approach towards any goal, with proper logic, decision and rationale falls under the umbrella of operations research. It is the subject, which applies statistical analysis, mathematical optimization, mathematical modeling, etc. to improve decision-making and work efficiency. The different sub-fields of operations research are stochastic models, computing and information technology, financial engineering, etc. This book attempts to understand the multiple branches that fall under the discipline of operations research and how such concepts have practical applications. It aims to shed light on some of the unexplored aspects of operations research. This textbook will serve as a valuable source of reference for those interested in this field.