Question
Use a graphing utility with an $\left[n P_{r}\right]$ menu item to verify your answers in Exercises $1-8 .$
Step 1
This is the notation for permutations, which is a way of arranging items. The formula for permutations is $nPr = \frac{n!}{(n-r)!}$, where $n$ is the total number of items, $r$ is the number of items to choose, and $!$ denotes factorial. Show more…
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