Finite Math Examples

$21$ , $17$ , $13$

Step 1

The mean of a set of numbers is the sum divided by the number of terms.

$\frac{21 + 17 + 13}{3}$

Step 2

Simplify the numerator.

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Step 2.1

Add $21$ and $17$ .

$\frac{38 + 13}{3}$

Step 2.2

Add $38$ and $13$ .

$\frac{51}{3}$

Step 3

Divide $51$ by $3$ .

$17$