Question 1070315
Theorem: The number of permutations of n objects taken r at a time is:
P_n,r = n(n-1)(n-2)...(n-r+1) and we can rewrite it like this:
P_n,r = n!/(n-r)!
:
In this problem P_n,r = 6^0 = 1. Good luck figuring out the value of r.