Question

Find the value of the permutation.
8P1 ?

Answer 1

P(n, r) = n!
____
(n-r)!

= 8!
____
(8-1)!

= 8

Answer 2

8P1 = 8

Explanation:

Permutation

The number of elements can be selected from a set of elements.

Let r be the number of elements want to select and n be the set of elements.

It can be written as nPr

nPr = n!/(n - r)!

To find 8P1

n= 8 and r = 1

8P1 = 8!/(8-1)! = 8!/7! = (8 x 7!)/7! = 8

Therefore 8P1 = 8