Is XY a Roman numeral

Answer 1

Oh, dude, "XY" is not a Roman numeral. Roman numerals are all about those fancy letters like I, V, X, L, C, D, and M. So, unless X and Y suddenly became part of ancient Roman culture, I'd say you're safe to use them for algebra or tic-tac-toe instead.

Answer 2

X in

Roma

n

numeral equals 10 while there is

n't a Y represe

ntatio

n i

n Roma

n

numeral.

Answer 3

15