Answer
$5040$
Work Step by Step
The factorial function is defined as the multiple of all whole numbers from the chosen number down to 1.
Thus: $n!=n\left( n-1 \right)!$
Or, $n!=n\left( n-1 \right)\left( n-2 \right)\ldots 2\cdot 1$
Thus,
$\begin{align}
& 7!=7\left( 7-1 \right)\left( 7-2 \right)\left( 7-3 \right)\left( 7-4 \right)\left( 7-5 \right)\left( 7-6 \right) \\
& =7\cdot 6\cdot 5\cdot 4\cdot 3\cdot 2\cdot 1 \\
& =5040
\end{align}$
Therefore, the value of $7!$ is $5040$.
