かindicates a questionかどうかwhether or notなんか何かsomethingだれか誰かsomeoneはいかがですかhow about it? (in a question form)かもmaybe; perhapsこんなかin this wayかもしれないmight be; may beいいかis it good? (informal question)かもしれませんmay be (formal)おもしろい面白いかis it interesting?きになる気になるかare you curious?