[rafram]

All Arabic-speaking countries use Arabic numerals. Some use Western Arabic numerals (123) and some use Eastern Arabic numerals (١٢٣).

Roman numerals are I, V, X, etc.

[throw0101c]

See perhaps:

* https://en.wikipedia.org/wiki/Arabic_numerals_(disambiguatio...

* https://en.wikipedia.org/wiki/Hindu–Arabic_numeral_system#Gl...

* https://en.wikipedia.org/wiki/List_of_numeral_systems