Lesson: Applied Arithmetic - 23t01

Factorials In-Format

[Page 23 of 36]

Click on the correct response and then click Continue.

14! - 13! =

	1!
	13
	14
	13!
	13 x 13!

Since 14! =14 x 13! you can factor 13! out of your original equation:

14! - 13! = 13!(14 - 1) = 13!(13) = 13 x 13!

So the correct answer is Choice (5).

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