"How many floors does the hotel have?"
Translation:Otel kaç katlı?
katlı is not accusative, it is a "with" adjective, read here https://www.duolingo.com/skill/tr/With-or-without%3F
I put 'Otel kaç tane katlı'. Why is it wrong with tase - I thought this was optional?!
Can you also say 'Otel kaç kat var'. I'm presuming var isn't necessary when 'with (lı) is used?!!