If $A \cap B = B$, then
$A \subset B$
$B \subset A$
$A = \phi $
$B = \phi $
If $A, B$ and $C$ are any three sets, then $A -(B \cup C)$ is equal to
If $X = \{ {4^n} - 3n - 1:n \in N\} $ and $Y = \{ 9(n - 1):n \in N\} ,$ then $X \cup Y$ = . . . . .
Consider the sets $X$ and $Y$ of $X = \{ $ Ram , Geeta, Akbar $\} $ and $Y = \{ $ Geeta, David, Ashok $\} $ Find $X \cap Y$
If $A$ and $B$ are two sets such that $A \subset B$, then what is $A \cup B ?$
If $A=\{1,2,3,4\}, B=\{3,4,5,6\}, C=\{5,6,7,8\}$ and $D=\{7,8,9,10\} ;$ find
$A \cup B \cup D$