Gia067-069.rar
Three cubs in the back by Tambako The Jaguar, CC BY-ND 2.0, cropped with permission
If the files inside have no extensions, you can use the file command in a command line or an online tool like CheckFileType to see their true format.
Use caution when opening .rar files from unknown sources, as they can contain malware. Scanning the file with antivirus software before extraction is highly recommended. Displaying the file type (file command) - IBM GIA067-069.rar
The file is a compressed archive that likely contains specific numbered data or media files (067, 068, and 069) related to a series or set labeled "GIA." If the files inside have no extensions, you
It may contain a sequence of technical reports or scanned documents indexed by these specific numbers. How to View the Contents Displaying the file type (file command) - IBM
Since a .rar file is a compressed format, you will need a utility to "extract" or "unrar" it to see what’s inside: