बीस • (bīs), Urdu spelling: بیس
बीस • (bīsa), pronounced बिस् (bis)
Cf. Sanskrit विंशति (viṃśatí), also Persian بيست (bist). Ultimately from Proto-Indo-Iranian, from Proto-Indo-European *h₁wih₁ḱm̥t, from *dwi(h₁)dḱm̥ti (“two-ten”).