Answer:
a. 4P4 = 24
b. 10P2 = 90
c. 5P1 = 5
Step-by-step explanation:
permutation is the act of arranging the members of a set into a sequence or order( in permutation order is important)
Given a permutation nPr
nPr = n!/(n-r)!
Substituting for each of the cases below we have;
a)4P4 = 4!/(4-4)! = 4! = 24
b) 10P2 = 10!/(10-2)! = 10!/8! = 10×9 = 90
c) 5P1 = 5!/(5-1)! = 5!/4! = 5
