Based on common usage for files with this name, it typically refers to one of the following:
(e.g., math, programming, logistics, or aviation). zadachi.rar
A package of homework, lab work, or exam preparation problems for students, often found on university portals or student forums like eLIBRARY.RU or VK student communities . Based on common usage for files with this
(e.g., a specific university course, a software installation folder, or a professional forum). or aviation). A package of homework
A collection of troubleshooting steps or "tasks" for specialized software, such as Kaspersky or 1C:ERP systems .
If you are looking for a specific guide contained inside such an archive, could you provide more context? For instance: