"Though a smaller numeral placed before a larger one generally decreases it by the amount of the first, the smaller number must be a power of ten, and cannot precede a number more than ten times its value. In other words, V, L, and D cannot be used to modify larger numbers; I (the numeral, not the editor) may modify only V and X, X only L and C, and C only D and M. As tempting as it might be to represent 1999 by MIM, common usage dictates that it be written MCMXCIX."
"infoplease.com/askeds/rules-governing-roman-numerals.html"
Also throwing this out there - Super Bowl XLIX, not Super Bowl IL.
"infoplease.com/askeds/rules-governing-roman-numerals.html"
Also throwing this out there - Super Bowl XLIX, not Super Bowl IL.