1. Find the value of each of the following:

a. 9?8

b. 9?1

c. 9?9

a. 9P8 = 362880

b. 9P1 = 9

c. 9P9 = 362880

1. Find the value of each of the following:

a. 9P8

b. 9P1

c. 9P9

Step-by-step explanation:

Permutation is a collection or a combination of objects from a set where the order or the arrangement of the chosen objects does matter (order is important in permutation).

Permutation nPr can be defined as;

nPr = n! / (n-r) !

a) 9P8 = 9! / (9-8) ! = 9!/1! = 9! = 362880

b) 9P1 = 9! / (9-1) ! = 9!/8! = (9 * 8!) / 8! = 9

c) 9P9 = 9! / (9-9) ! = 9!/0! = 9! = 362880