каком

which, what

k ɐ k o m → какой

как what, which + ом Locative singular (masculine or neuter)

pronoun · singular, locative Rare #37,576

which, what Used after certain prepositions, as in «на каком» (“on which”).

RU: На каком автобусе мы поедем?

EN: Which bus are we taking?

Forms of какой

“In which”?

— Son of a Rich (2019)

Tell Tom which one to ride.

None anymore.

— Женщины на грани нервного срыва (1988)

Which one?

— Посредник (2022)

Tell her which one to take.

Sounds similar to