Question

what is the length of $overline{mn}$?
90 91 92 93 94 95

Explanation:

Step1: Identify the coordinates

The coordinate of point $M$ is $91$ and the coordinate of point $N$ is $92$.

Step2: Use the distance formula on a number - line

The distance between two points $a$ and $b$ on a number - line is $|b - a|$. Here, $a = 91$ and $b = 92$. So, $|92-91|=1$.

Answer:

$1$