Why do some analog clocks with Roman numerals have '4' as 'IV,' while others have 'IIII'? This is one of those questions where no one seems to have a definitive answer, and probably no one ever will.

While Roman numerals (unsurprisingly) date back to ancient Rome, they are used in many facets of society beyond the Super Bowl, including on clocks, watches and to identify kings, queens and popes.

Roman numerals are a numeral system which was used in Ancient Rome. It uses letters instead of numbers to represent values. You may have seen Roman numerals on clocks and on TV or film credits.