Introduction:
Solving previous year papers is an effective strategy to prepare for any competitive exam, including UPSC. However, whether to solve them in a handwritten format or type the answers for faster completion depends on various factors.

Handwritten Format:
1. Improved Retention: Writing answers by hand can enhance information retention as it engages the brain in a different way compared to typing. The physical act of writing helps in better understanding and memory recall.
2. Enhanced Focus: Writing answers by hand requires more concentration and focus, as it involves a slower pace. This can lead to better comprehension of the question and the ability to provide detailed and accurate answers.
3. Practice for Exam: UPSC exams are conducted in pen and paper format, so practicing in a similar way can help in becoming familiar with the exam pattern and conditions. It also helps in developing the necessary writing speed.

Typed Format:
1. Time Efficiency: Typing answers can be faster compared to writing by hand, especially for individuals who are proficient in typing. This can be advantageous when there is a need to complete a large number of questions within a limited time frame.
2. Easy Editing: Typing allows easy editing and revising of answers. Mistakes can be corrected swiftly without making the answer sheet messy. This can save time and improve the overall quality of the answers.
3. Convenience: Typing offers the convenience of using spell check, grammar check, and other digital tools that can aid in producing error-free and well-structured answers. It also allows easy storage, retrieval, and sharing of the answers in digital format.

Conclusion:
Both handwritten and typed formats have their own advantages. It is recommended to strike a balance between the two approaches based on individual preferences and exam requirements. While handwriting can enhance retention and focus, typing can provide speed and convenience. One can initially practice in a handwritten format to build a strong foundation and later transition to typing for quicker completion and easy editing. Ultimately, the key is to choose the method that maximizes the efficiency and effectiveness of the preparation process.