Question

Find$1!,2!,4!,\mathrm{and}6!$.

Short answer

$$\begin{gathered} 1!=1 \\ 2!=2 \\ 4!=24 \\ 6!=720 \end{gathered}$$

Step-by-step solution

Step 1. Given information.

The given statement is:

$1!,2!,4!,\mathrm{and}6!$

Step 2. Compute the values.

Use the formula:

$n!=n·\left(n-1\right)·\left(n-2\right)·........·3·2·1$

Then,

$$\begin{gathered} 1!=1 \\ 2!=2·1 \\ =2 \\ 4!=4·3·2·1 \\ =24 \\ 6!=6·5·4·3·2·1 \\ =720 \end{gathered}$$