: This usually means the download was interrupted. Try downloading the file again.
: Use The Unarchiver , which is a lightweight, free app available on the Mac App Store. tarea 822.rar
: If the file asks for a password, it was likely set by the creator. Common passwords in academic circles are "1234", "password", or the name of the school/professor. : This usually means the download was interrupted
: Only open the file if you received it from a trusted source, such as an official school portal (Canvas, Moodle, Blackboard) or a known classmate. which is a lightweight