What's in a Number?

Are you Triskaidekaphobic? Or just Paraskevidekatriaphobic?The first refers to a fear of the number 13. It's common enough, which is why hotels often don't have a 13th floor (but of course they do, it's simply labeled 14), and some airlines don't have a 13th row. This isn't a universal fear, however.In Italy, 17 is supposed to be an unlucky number. Tetraphobia, fear of the number 4 — (