Is the following statement true or false?

$3$3$\in$∈$\left\{2,4,5,8\right\}${2,4,5,8}

True

False

$1$1$\in$∈$\left\{9,8,6,5,1\right\}${9,8,6,5,1}

$7$7$\notin$∉$\left\{6,5,4,2\right\}${6,5,4,2}

List the elements in the set {$x$x$\mid$∣$x$x is a natural number less than $5$5}.

Describe how various subsets of a number system are defined, and describe similarities and differences between these subsets.

Use patterns and number relationships to explain density, infinity, and limit as they relate to number sets.