The UPSC (Union Public Service Commission) conducts various exams for recruitment into the Indian administrative services, including the optional subject of Mathematics.

Importance of Previous Year Question Papers:
- Previous year question papers serve as an essential resource for exam preparation.
- They help candidates understand the exam pattern, marking scheme, and the types of questions asked.
- Solving previous year papers allows candidates to assess their preparation level and identify areas that require improvement.
- It also helps in time management and boosts confidence.

Availability of Previous Year Question Papers:
- The UPSC releases question papers of the Mathematics Optional subject exam as part of its annual reports.
- These reports are available on the official website of the UPSC and can be accessed by the candidates.
- Additionally, there are online platforms like EduRev that provide previous year question papers for the UPSC Mathematics Optional subject exam.
- EduRev features a vast collection of UPSC question papers, including those for Mathematics Optional.

Benefits of Using EduRev for Previous Year Question Papers:
- EduRev is a reliable platform known for its extensive collection of study materials, including previous year question papers.
- It allows candidates to access question papers from a wide range of years, enabling thorough preparation.
- The platform offers various features to enhance the learning experience, such as solutions to the question papers and the ability to track progress.
- EduRev is user-friendly and provides an intuitive interface, making it easy for candidates to navigate and search for specific question papers.

In conclusion, previous year question papers are crucial for the UPSC Mathematics Optional subject exam. Platforms like EduRev offer a comprehensive collection of these question papers, helping candidates in their preparation journey.