Questions & Answers about ¿Cuántas quieres?
Because cuántas agrees with a feminine plural noun that is understood from context.
Spanish changes cuánto depending on the gender and number of the thing being counted:
- cuánto = masculine singular
- cuánta = feminine singular
- cuántos = masculine plural
- cuántas = feminine plural
So ¿Cuántas quieres? means the speaker is asking about more than one feminine thing.
Example:
- ¿Cuántas galletas quieres? = How many cookies do you want?
Usually, an understood noun is being left out because it is already clear from the situation.
For example, if you are talking about:
- galletas → ¿Cuántas quieres?
- cervezas → ¿Cuántas quieres?
- camisas → ¿Cuántas quieres?
In English, we also sometimes do this:
- How many do you want?
So the full idea is often something like:
- ¿Cuántas [galletas] quieres?