If $A$ and $B$ are any two sets, then $A \cup (A \cap B) $ is equal to
If ${N_a} = \{ an:n \in N\} ,$ then ${N_3} \cap {N_4} = $
Consider the sets $A$ and $B$ of $A=\{2,4,6,8\}$ and $B=\{6,8,10,12\}$ Find $A \cap B .$
If $A=\{3,5,7,9,11\}, B=\{7,9,11,13\}, C=\{11,13,15\}$ and $D=\{15,17\} ;$ find
$A \cap C$
Find the intersection of each pair of sets :
$X=\{1,3,5\} Y=\{1,2,3\}$