Explanation
Used to express a dilemma or indecision between two options or actions.
Formation
Verb-volitional + か + Verb-volitional + まいか, い-Adjective + であるか + い-Adjective + であるまいか, な-Adjective + であるか + な-Adjective + であるまいか, Noun + であるか + Noun + であるまいか
Detailed explanation
The ～か～まいか grammar point expresses uncertainty or indecision, often with a more formal or literary feel. Typically, it is seen with verbs in the volitional form plus まい (the negative volitional). In more academic or stiff writing, い／な-adjectives and nouns plus である can also appear before まいか.
Examples
Kono purojekuto o hikiukeyou ka hikiukemai ka, mada kimete inai.
I haven't decided whether to take on this project or not.
Kare ga seikou shiyou ka seikou suru maika, ima wa yosoku dekinai.
Whether he will succeed or not is unpredictable at the moment.
Kono mondai wa kantan de aru ka muzukashii de aru maika, iken ga wakarete iru.
Opinions are divided on whether this problem is simple or difficult.
Kare wa riidā de aru ka forowā de aru maika, jibun de erabu beki da.
He should choose for himself whether he is a leader or a follower.
Practice
Grammar content sourced from hanabira.org.