Answer:
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
