Hello,

To retrieve your hall ticket number for the 10th class from 2011 using your roll number, you typically need to follow these steps:

1. Visit the Official Website of Your Education Board:

- Most education boards have an online portal where you can retrieve past exam details.

- For example, if you studied in India, visit the official website of your state education board (like CBSE, ICSE, or a state board).

2. Check the Results Section:

- Look for a section on the website that deals with past exam results or certificates. It might be labeled as "Results," "Student Services," or "Certificate Verification."

3. Input Your Roll Number:

- There should be an option to input your roll number or other details like your name, date of birth, and year of passing.

- Enter the required details carefully to fetch your hall ticket number.

4. Contact the School or Board Office:

- If the online method does not work, you can contact your school where you appeared for your exams. Schools usually keep records of hall ticket numbers and other related information.

- Alternatively, visit or contact the regional office of your education board.

5. Request for Duplicate Hall Ticket:

- Some boards allow you to request a duplicate hall ticket for a fee. You may need to fill out a form and provide identification and other detals.

Hope it helps !