“Testbook [Electronic resource]” is a versatile and multifunctional assistant for those who want to prepare for exams, test papers or just want to test their knowledge in various fields. The author's team, who collected this unique collection, tried to make it as useful, practical and adapted to modern requirements of educational standards. This collection is not just a set of questions, but a full-fledged tool for systematizing knowledge, developing logical thinking and confidently passing test tasks. The book is intended for a wide range of readers - students, schoolchildren, teachers and everyone who appreciates quality training and wants to improve their performance. In it will find something useful and those who are just starting their way in the study of subjects, and those who have long been looking for new ways to fix the material. It is especially useful for those who are preparing for exams in mathematics, Russian language, history, social studies, biology and other disciplines. Thanks to its electronic form, the book is easily accessible and convenient for use on various devices - computers, tablets and smartphones, which makes it an indispensable assistant in the modern rhythm of life. What makes the “Testbook [Electronic Resource]” especially attractive? First of all, the richness and diversity of the questions presented . The collection contains tests of different levels of complexity, which allows not only to check the current level of knowledge, but also to gradually increase it, overcoming new challenges. The questions are formulated clearly and clearly, which contributes to the rapid and accurate perception of information . In addition, the collection includes an analysis of typical errors, tips for preparation and recommendations for the effective use of tests, which makes it not just a reference book, but a full-fledged training manual. The author's team that created this collection are experienced teachers and methodologists who are well versed in the features of modern exams and test tasks. Their approach to training is systematic and practical . As a result, the book not only helps to prepare for exams, but also contributes to the development of critical thinking, analytical skills and the ability to quickly navigate issues of varying complexity. This approach makes the collection a valuable tool for those who want not only to learn the material, but really understand it and learn to apply it in practice. Special attention is paid to the presentation style and structure of the book. It is made in a modern electronic format, which makes it easy to search for the necessary sections, mark important points and repeat the material [...] This makes the preparation process more comfortable and efficient. In addition, the collection includes links to additional resources, video tutorials and test platforms, which expands opportunities for self-learning and consolidation of knowledge. If we talk about the style of the authors, it is distinguished by clarity, logic and a friendly presentation of information. They are able to interest the reader, motivate him to continue learning and overcoming difficult moments. Their other well-known works are manuals for preparing for the USE and OGE, educational materials on the subjects of the school program, which confirms their professionalism and deep understanding of the educational needs of a modern student. In general, the “Testbook [Electronic Resource]” is not just a book, but a reliable satellite on the way to success. It is worthy of attention of all who appreciate high-quality training, want to increase their chances of successfully passing exams and just like to study. This book is your personal trainer that will help you unlock potential, develop skills and confidently step into new achievements. Do not miss the opportunity to make your educational path more bright, interesting and effective!