"Are you the eleventh?"
Translation:Te vagy a tizenegyedik?
Just a quick pronunciation tidbit. I think the difference in pronunciation between 11th (tízenegyedik) and 14th (tízennegyedik) is a very good practice point for non-native speakers. Not sure if this course gives audio for both words, but keep an ear out for them, and try to hear the difference between the two.
Tizenegyedik and tizennegyedik (and every numeral starting with "tizen-") is short i. :) Only the root tíz is long í.