Question

How do you find `""_11P_3`?

Answer 1

`"_11P_3=990`

Explanation:

`"_nP_r=(n!)/((n-r)!)`

`"_11P_3=(11!)/((11-3)!)`

`"_11P_3=(11xx10xx9xxcancel(8!))/cancel((8!))`

`"_11P_3=990`