Learn Turkish: Herhangi bir yetkiliye soralım.

When modifying a singular countable noun to mean "any (random) one," yes! The phrase herhangi bir works as a single unit meaning "any." You cannot just say herhangi yetkiliye; it must be herhangi bir yetkiliye.

Why does yetkili have the -ye suffix?

In Turkish, the verb sormak (to ask) requires the dative case because you direct your question "to" someone. Since yetkili (official) ends in a vowel, we add the buffer letter -y- followed by the dative suffix -e.

How is the word yetkili formed?

It comes from the noun yetki, which means "authority" or "power." The suffix -li means "having" or "with." So, yetkili literally means "having authority," which we translate as "an official."

What makes soralım mean "Let's ask"?

This is the "we" form of the optative mood, which is used for suggestions. You take the verb stem sor- (ask) and add the suffix -alım (or -elim for front vowels). This ending translates directly to "Let's [verb]."