When it comes to ordinal numbers, it is essential to use the correct suffix to indicate the position in a sequence. In the case of “72st” or “72nd,” there is a clear winner. The correct option is “72nd.” Let’s learn the explanation and look at some examples to understand why.
In English grammar, ordinal numbers are used to denote position or order. They are formed by adding a suffix to the cardinal number. Usually, the suffix is “-th” for numbers ending in “0,” “1,” “2,” and “3.” For numbers ending in all other digits, including “72,” the suffix used is “-nd.”
To illustrate this rule, let’s take a look at some examples:
1st – first
2nd – second
3rd – third
4th – fourth
5th – fifth
As you can see, the endings of these numbers are consistent with the rule, and the same applies to “72nd.” Using “72st” would deviate from this pattern and would not be grammatically correct.
Now, let’s explore why the correct suffix here is “-nd” and not “-st.” When we add these ordinal endings to numbers, we do not simply replicate the suffix from the cardinal number. Instead, we modify it to match the correct ordinal form.
To better understand this, imagine you’re organizing a race, and the runners are numbered. The runner in first place would be awarded the “1st” position. Now, let’s say you have a really long race, and the runner holding the 72nd position deserves recognition. By using “72nd,” you indicate that the runner is in the 72nd (seventy-second) position, just as “1st” represents the first position.
Using “72st” here would not only break the established pattern of ordinal numbers but also confuse the reader. They might interpret it as “seventy-third” since the ordinal suffix “-rd” is commonly associated with the numbers ending in “3.”
To summarize, the correct form is “72nd” because it follows the rule of using the suffix “-nd” for numbers ending in all other digits except “0,” “1,” “2,” and “3.” This pattern ensures consistency and clarity in how we communicate positions or order.
In conclusion, when faced with the choice between “72st” or “72nd,” the correct option is “72nd.” By adhering to the established rule for forming ordinal numbers and using the appropriate suffix, we can convey information accurately and avoid confusion. So, let’s stick with “72nd” and maintain the integrity of the English language’s grammatical structure.