The prefix "prbackup" typically stands for "Practice Revision Backup." These files are often shared via Telegram or Google Drive as video lectures (.mkv) for students who missed live sessions or are revising for upcoming exams.
The .mkv extension indicates it is a video file. If you are looking for the "Full Paper" (question paper or PDF notes) that accompanies this video, it is usually found in the description of the source video or the associated Telegram channel where the file originated. How to Find the Full Paper prbackup ep 181.mkv
If you downloaded this file, search the name "prbackup" in the Telegram channel you got it from. Most faculty members post a PDF with the same episode number. How to Find the Full Paper If you
If you have the file locally, check for a "Notes" or "PDF" subfolder often included in lecture backup zip files. prbackup ep 181.mkv