It looks like your question is a bit unclear. Could you please clarify what you mean by "what size is 3"? For example:
- Are you asking about the size of the number 3 in a particular context (like clothing, shoes, or something else)?
- Or are you referring to the size of an object labeled "3"?
- Or maybe something else entirely?
Please provide a bit more detail so I can give you the most accurate and helpful answer!
