How do you respond to how many brothers have in Spanish?

Here's how you can respond to "How many brothers do you have?" in Spanish, along with explanations:

Formal:

* Tengo [number] hermanos. (I have [number] brothers.)

* Example: Tengo dos hermanos. (I have two brothers.)

Informal:

* Tengo [number] hermanos. (I have [number] brothers.) - You can use this same sentence structure as the formal version.

* Soy [number] hermanos. (I am [number] brothers.) - This is a more casual and direct way to say it.

If you have no brothers:

* No tengo hermanos. (I don't have brothers.)

* Soy hijo único. (I am an only child.) - This is more specific and means you have no siblings at all.

Important Notes:

* "Hermanos" means "brothers" in Spanish, but it also includes siblings of both genders. If you want to specify you have only male siblings, you can use "hermanos varones".

* "Hijo único" literally means "only child," but it is often used to mean having no brothers or sisters.

Context is Key:

The most appropriate response depends on the situation:

* Formal situations: Stick to "Tengo [number] hermanos."

* Informal situations: Use "Soy [number] hermanos." or "No tengo hermanos."

* If you want to be specific: "Soy hijo único" clearly indicates you have no siblings.

Remember that Spanish is a very rich and nuanced language. It's always best to adapt your language to the specific context and person you're talking to.