Here are some possibilities:
* Arts as a general category: If you're talking about "arts" as a general category, there are countless subjects that could be considered "arts." This could include everything from traditional fine arts like painting, sculpture, and music to more contemporary forms like photography, filmmaking, and digital art.
* Arts as a specific academic field: In some universities, "ARTS" might refer to a specific faculty or department. In this case, the number of subjects would be defined by the programs offered within that particular department.
* Arts in a specific context: If you're asking about the number of subjects in a specific arts-related program (like a bachelor's degree in Arts), the number of subjects would be determined by the specific program requirements.
To get a more specific answer, you need to provide more context. For example:
* What specific institution or program are you referring to?
* What is the level of education you are asking about (e.g., high school, undergraduate, graduate)?
* What kind of arts are you interested in?
Once you provide more information, I can give you a more accurate answer.