Answer :
ANSWER:
1
STEP-BY-STEP EXPLANATION:
We have the following expression which is a combination:
[tex]_nC_n[/tex]We apply the formula of the combination, as follows:
[tex]\begin{gathered} _nC_r=\frac{n!}{r!\left(n-r\right)!} \\ \\ r=n,\text{ therefore:} \\ \\ _nC_n=\frac{n!}{n!\left(n-n\right)!}=\frac{n!}{n!\cdot\:0!}=\frac{n!}{n!\cdot1}=1 \end{gathered}[/tex]The answer after evaluating the expression is 1