In other contexts, "G10" can appear in (e.g., Tender Package No. 10), where it may contain technical drawings or contract conditions.
Recordings for 10th-grade French lessons. G10.rar
It is a .rar file, which requires decompression software like WinRAR or similar mobile apps to access the .mp3 or audio files inside. In other contexts, "G10" can appear in (e