Yes, solving previous years' papers of UPSC Management optional subject can help in improving your understanding of international business concepts. Here's how:

1. Comprehensive Coverage: The previous years' papers of UPSC Management optional subject cover a wide range of topics related to international business. By solving these papers, you can gain a comprehensive understanding of various concepts, theories, and practices in the field.

2. Familiarity with Exam Pattern: Solving previous years' papers can help you become familiar with the exam pattern of UPSC Management optional subject. This will enable you to understand the types of questions asked, the format of the answers, and the weightage given to different topics. It will also help you manage your time effectively during the actual exam.

3. Exposure to Different Question Styles: The previous years' papers of UPSC Management optional subject often include a variety of question styles, such as multiple-choice, short answer, and essay-type questions. By practicing these different question styles, you can enhance your problem-solving skills and develop a deeper understanding of international business concepts.

4. Identification of Knowledge Gaps: Solving previous years' papers can help you identify your knowledge gaps in the subject. When you encounter a question that you are unable to answer or find difficult, it indicates an area where you need to improve. This will enable you to focus your efforts on strengthening your understanding of those specific topics.

5. Revision and Reinforcement: Regularly solving previous years' papers can serve as an effective revision tool. It allows you to revisit the concepts you have studied, reinforce your understanding, and identify any areas that require further attention. This active recall and reinforcement process can significantly improve your retention and recall of international business concepts.

6. Time Management Skills: Solving previous years' papers under timed conditions helps you develop essential time management skills required during the actual exam. It trains you to allocate appropriate time to different sections, prioritize questions, and complete the paper within the given timeframe.

7. Confidence Building: By solving previous years' papers and consistently improving your performance, you can boost your confidence levels. This confidence will reflect in your approach to the actual exam and help you perform better.

Therefore, solving previous years' papers of UPSC Management optional subject can be highly beneficial in improving your understanding of international business concepts, enhancing your problem-solving skills, and preparing you for the UPSC exam.