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.

Roman numerals get nine by putting I, which equals 1, before X, which equals 10, to essentially indicated 10-1=9. For comparison, when I appears after X, as in XI, that indicates 10 + 1 ...

the Super Bowl officially used Roman numerals. Before Hunt and Rozelle’s bold decision, the first four championships were simply called Super Bowl 1, 2, 3, and 4. The numerals I through IV were ...