Let $A$ and $B$ be two sets such that $n(A) = 16$, $n(B) = 14$, and $n(A \cup B) = 25$. Then $n(A \cap B)$ is equal to:

Which of the following pairs of sets are disjoint?
$A = \{a, e, i, o, u\}$ and $B = \{c, d, e, f\}$

If $A$ and $B$ are not disjoint sets,then $n(A \cup B)$ is equal to

If $A$ and $B$ are any two events of a sample space,then the set-theoretic description for the event: "Exactly one of the events $A, B$ occurs" is
(Here $E^c$ denotes the complement of the event $E$)

If $A=\{3, 5, 7, 9, 11\}, B=\{7, 9, 11, 13\}, C=\{11, 13, 15\}$ and $D=\{15, 17\}$,find $A \cap (B \cup C)$.

Draw the appropriate Venn diagram for the following set operation: $A^{\prime} \cap B^{\prime}$.