Pre-Algebra Examples

$B = (13, 14, 15, 16, 17, 18, 9, 20)$

Step 1

The cardinality of a set is the number of members in the set.

$8$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$