How do you answer cual su de nacimiento?

The question "¿Cuál es su de nacimiento?" is grammatically incorrect in Spanish. It seems like you're asking about someone's place of birth.

Here's how you can correctly ask and answer that question:

Question:

* ¿Cuál es su lugar de nacimiento? (What is your place of birth?)

* ¿Dónde nació? (Where were you born?)

Answer:

* Nací en [place of birth]. (I was born in [place of birth].)

* Soy de [place of birth]. (I am from [place of birth].)

Example:

Question: ¿Cuál es su lugar de nacimiento?

Answer: Nací en Madrid.

Let me know if you have any other Spanish questions!