The book "Investigation of Operations in Tasks and Exercises" by Vladimir Viktorovich Morozov , Alexey Grigoryevich Sukharev and Vyacheslav Vasilyevich Fedorov is a unique training manual , which will become an indispensable assistant for students and teachers in the field of applied mathematics . This publication not only covers the theoretical aspects of operations research, but also offers an extensive set of tasks and exercises, making it ideal for practical mastery of the material. The main purpose of the book is to acquaint readers with the methods and tools used in the study of operations, as well as to demonstrate their application in real situations. The authors focus on how mathematical models can help in decision-making in conditions of uncertainty and limited resources. The reader will find here many examples from various fields, such as economics, logistics, project management and others, which makes the material universal and relevant. The book will be of interest not only to students studying applied mathematics, but also to practitioners working in the fields of management, economics and engineering. It is suitable for both beginners and those who already have some knowledge in the field of operations research and want to deepen their skills. Thanks to the accessible language of presentation and a clear structure, the manual will be an excellent help for self-study. The topics covered in the book cover a wide range of topics, from basic game theory and linear programming to more complex concepts such as multi-criteria decision-making and stochastic models. The authors pay special attention to practical aspects, offering readers not only a theory, but also real examples, which allows a better understanding of how to apply the studied methods in life. The style of the authors is distinguished by clarity and logical presentation, which makes even the most complex concepts accessible to understanding. Each section of the book is accompanied by tasks that will help to consolidate the material and develop analytical skills. This makes the manual not only a training, but also a practical tool for future specialists. If you are looking for a high-quality training manual on operations research that will help you understand complex mathematical concepts and teach you how to apply them in practice, then this book will be an excellent choice. It can be useful not only for students, but also for teachers who want to enrich their courses with relevant examples and tasks. In conclusion, Operations Research in Tasks and Exercises is not just a textbook, but a whole world of possibilities for those who seek a deep understanding of applied mathematics. With it, you can not only master the theory, but also learn how to apply knowledge in real situations, which is an integral part of a successful career in any of your chosen areas. Do not miss the opportunity to expand your horizons and immerse yourself in the fascinating world of operations research along with this wonderful guide!