Definitions
from Wiktionary, Creative Commons Attribution/ShareAlike License
 n. Plural form of factorial.
Etymologies
Sorry, no etymologies found.
Examples

You can plot 2D graphs and you can work with matrices, do complex integrals, calculate very large factorials, and that's the most simple stuff. try matrices: or differential equations:
First Look At Wolfram Alpha’s Impressive Knowledge Computation  Lifehacker Australia

Perhaps worse in this case, as permutations goes as factorials.

You can plot 2D graphs and you can work with matrices, do complex integrals, calculate very large factorials, and that's the most simple stuff. try matrices:
First Look At Wolfram Alpha’s Impressive Knowledge Computation  Lifehacker Australia

With five decisionmakers there are a lot of linkages  120 as a matter of fact if you remember your factorials.

The sum of the first four positive factorials is 33.

I also don't like the Brillouin index because it has way too many factorials in it, but this is a separate rant that has nothing to do with the social appropriateness of the model at hand.
And for those concerned that Americans might be losing their sense of priorities:

For this purpose one needs an approximation formula for the factorials of large numbers.

But then, this was before my kids had worked with factorials or tried the year game.

That "More about calculator" link in the screenshot above unfortunately takes you to this page buried in the Google help files to discover how the Google Calculator can do trigonometric functions, logarithms and factorials.

Students are usually quick to form generalizations, so they might conclude that if the scheme of summing factorials of the digits of a number doesn't get you back to the original number then try it again and it ought to work.
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