Problema Solution
Nine performers will present their acts at a variety show. How many different ways can their
appearances be scheduled?
Answer provided by our tutors
A permutation is an arrangement, or listing, of objects in which the order is important.
In our case we have 9 objects that we need to arrange in a sequence and the order is important.
Ne need to find the number of permutations of 9 things taken 9 at a time:
P(9, 9) = 9!/(9 - 9)!
P(9, 9) = 9!
P(9, 9) = 362,880
the appearance can be scheduled in 362,880 different ways.