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EVALUATE THE FOLLWING:A. nPn = B. 92!/82!C. nCn=

User Gwidryj
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1 Answer

1 vote
Answer:

nPn = n!

Step-by-step explanation:

Note that:


nPr=(n!)/((n-r)!)

To get nPn, let r = n


\begin{gathered} nPn=(n!)/((n-n)!) \\ \\ nPn=(n!)/(0!) \\ \\ nPn=(n!)/(1) \\ \\ nPn=n! \end{gathered}

Therefore, nPn = n!

User Alon Gubkin
by
7.7k points

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