What are ordinal numbers

• Ordinal numbers are numbers that denote position or rank in a sequence. 
• They are often used to number lists, as in first, second, third, etc. In mathematical terms, ordinal numbers are a special case of the natural numbers (positive integers).
• There are a few things to keep in mind when using ordinal numbers. 
• First, they always come after the noun they modify. In other words, you would never say "two people and third a cat." - Second, ordinal numbers are not always written out in full. In many cases, you can use the abbreviations "1st," "2nd," "3rd," etc.

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Here are some examples of ordinal numbers in use:

• She is the third person in line.
• This is my second time seeing that movie.
• I will be arriving on the 10th.

As you can see, ordinal numbers are a helpful way to communicate position or rank. When used correctly, they can make your writing more precise and easier to understand.

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