Answer:
A permutation is an arrangement, or listing, of objects in which the order is important. In previous lessons, we looked at examples of the number of permutations of n things taken n at a time. Permutation is used when we are counting without replacement and the order matters. If the order does not matter then we can use combinations.
In general P(n, r) means that the number of permutations of n things taken r at a time. We can either use reasoning to solve these types of permutation problems or we can use the permutation formula.
The formula for permutation is
permutation formula
If you are not familiar with the n! (n factorial notation) then have a look the factorial lessons.
Step-by-step explanation:
I HOPE IT HELPS
#CARRY ON LEARNING
#STAY SAFE
#STAY HEALTHY ALWAYS
MAKE ME AS A BRAINLEIST PLSS.^_^❤️
