n = 5
r = 3
P = Permutations(range(n), r).list()
nPr = len(P)
print(f"Number of permutations P({n},{r}) = {nPr}")Or:
Permutations(range(n), r).cardinality()Or:
def Per(n,r):
return factorial(n) / factorial(n - r)n = 5
r = 3
P = Permutations(range(n), r).list()
nPr = len(P)
print(f"Number of permutations P({n},{r}) = {nPr}")Or:
Permutations(range(n), r).cardinality()Or:
def Per(n,r):
return factorial(n) / factorial(n - r)