Introduction:
Practicing numerical problems in economics is essential for developing a strong understanding of concepts and improving problem-solving skills. Numerous websites offer resources and practice questions to help students in their preparation. In this response, we will discuss one such website, EduRev, which provides a wide range of numerical problems in economics.

EduRev:
EduRev is an online learning platform that offers a comprehensive collection of study materials, including numerical problems, for various subjects, including economics. It is a highly recommended website for students preparing for UPSC or any other competitive exams.

Features of EduRev:
1. Wide Range of Topics: EduRev covers a vast range of topics in economics, including microeconomics, macroeconomics, international economics, public finance, and more. This allows students to practice problems from different areas of the subject.

2. Topic-wise Practice Questions: The website provides topic-wise practice questions that are designed to test the students' understanding of specific concepts. These questions are categorized under different topics, making it easy for students to focus on areas they need to improve.

3. Difficulty Levels: EduRev offers practice questions at different difficulty levels, ranging from basic to advanced. This allows students to gradually progress and challenge themselves as they become more comfortable with the subject.

4. Solution Videos and Explanations: Each practice question on EduRev is accompanied by detailed solutions in the form of video lectures or step-by-step explanations. These resources help students understand the problem-solving approach and clarify any doubts they may have.

5. Interactive Quizzes: EduRev also provides interactive quizzes that allow students to test their knowledge and assess their understanding of various economic concepts. These quizzes are a great way to reinforce learning and identify areas that require further attention.

6. Community Engagement: EduRev has a vibrant community of students and educators who actively participate in discussions, share study materials, and clarify doubts. This collaborative learning environment enhances the overall learning experience.

Conclusion:
EduRev is a highly recommended website for practicing numerical problems in economics. Its vast collection of topic-wise practice questions, detailed solutions, interactive quizzes, and engaged community make it an excellent resource for students preparing for UPSC or any other competitive exams. Regular practice using EduRev will help students build a strong foundation in economics and improve their problem-solving skills.