Evaluate P(7,3)
what does the p stand for and how do i solve it? the question before it was evaluate 6! (720) so it might be along those lines but is this a typo?
Judging by what your previous question asked, i think you want the permutation
$\displaystyle P(n,r) = \frac {n!}{(n - r)!}$
So, $\displaystyle P(7,3) = \frac {7!}{(7 - 3)!} = \frac {7!}{4!} = 7(6)(5) = 210$
For the record, you may encounter these other notations in the future, so i'll tell them to you.
$\displaystyle P(n,r) = _n P _r = P_{r}^{n}$