I'm trying to get my head around gender in German, for example:
Ist Ihr Freund Deutscher?
So this is German for "Is your friend German?", referring to a male friend. Now if I wanted to say this for a female, is it:
Ist Ihre Freundin Deutscherin?
Ist Ihre Freundin Deutscher?
Similarly, can I also say:
Nein, meine Freundin ist keine Deutscher[in].
I guess the question is whether or not adjectives take the same female ending 'in' as nouns do.