4.02 Domain and range and set notation

List the elements in the set {$x\ \mid\ x$x ∣ x is an integer between $-8$−8 and $-3$−3 (not inclusive)}.

List the elements of the set {positive factors of $42$42}

Which symbol will make the statement true?

$5$5 $\editable{}$ $\left\{2,5,6,9\right\}${2,5,6,9}