This is one of those quirky grammar rules that can be confounding because the rule for speaking differs from the rule for writing. Ordinal numbers show order, or a position in a series: first (1st), ...

There are two kinds of numbers; ordinal and cardinal. Ordinal numbers denote rank or position in a system, while cardinal numbers tally how many units of something there are. You can think of ordinals ...

An ordinal variable is a number that shows the position of an object within a series of objects with the use of a suffix, for example, "1st" or "453rd." When preparing a worksheet in Excel for your ...