Where does “երեք” come from?

երեք (Old Armenian) comes from Proto-Indo-European *tréyes.

երեք (Old Armenian): three; third; thrice

Definitions

three; third; thrice

Ancestry of “երեք”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	*tréyes	—

Words derived from “երեք”

Every word from Proto-Indo-European *tréyes →

երեք — Etymology, Origin & Word History | Etymology Explorer