8 Permutations of 4 ·

19 Jun 2024, 00:00

Evaluate the following permutation

8P4

Permutation Definition:

An order or arrangement

Permutation Formula:

nPr =	n!
	(n - r)!

where n is the number of items
r is the number of arrangements.

Plug in n = 8 and r = 4

8P4 2	8!
	(8 - 4)!

Factorial Formula:

n! = n * (n - 1) * (n - 2) * .... * 2 * 1

Calculate n!:

n! = 8!

8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1

8! = 40,320

Calculate (n - r)!:

(n - r)! = (8 - 4)!

(8 - 4)! = 4!

4! = 4 x 3 x 2 x 1

4! = 24

Calculate 8P4:

8P4 =	40,320
	24

8P4 = 1,680

Excel or Google Sheets formula:

=PERMUT(8,4)

What is the Answer?

8P4 = 1,680

How does the Permutations and Combinations Calculator work?

Free Permutations and Combinations Calculator - Calculates the following:
Number of permutation(s) of n items arranged in r ways = nPr
Number of combination(s) of n items arranged in r unique ways = nCr including subsets of sets
This calculator has 2 inputs.

What 2 formulas are used for the Permutations and Combinations Calculator?

nPr=n!/r!
nCr=n!/r!(n-r)!

For more math formulas, check out our Formula Dossier

What 4 concepts are covered in the Permutations and Combinations Calculator?

combinationa mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter
nPr = n!/r!(n - r)!factorialThe product of an integer and all the integers below itpermutationa way in which a set or number of things can be ordered or arranged.
nPr = n!/(n - r)!permutations and combinations

8 Permutations of 4

Evaluate the following permutation 8P4 An order or arrangement where n is the number of itemsr is the number of arrangements. n! = n * (n - 1) * (n - 2) * .... * 2 * 1 n! = 8! 8! = 8 x 7 x 6 x 5 x 4 x 3 x