evaluate the following permutation: 6p3

evaluate the following permutation: 6p3
Answer
Explanation:
Step1: Recall permutation formula
The formula for permutations is ${n}P{r}=\frac{n!}{(n - r)!}$. Here $n = 6$ and $r=3$.
Step2: Calculate factorial values
$n!=n\times(n - 1)\times\cdots\times1$. So $6! = 6\times5\times4\times3\times2\times1=720$ and $(6 - 3)!=3!=3\times2\times1 = 6$.
Step3: Substitute into formula
${6}P{3}=\frac{6!}{(6 - 3)!}=\frac{720}{6}=120$.
Answer:
120