If $A, B$ and $C$ are any three sets, then $A -(B \cup C)$ is equal to
$(A -B) \cup (A -C)$
$(A -B) \cap (A -C)$
$(A -B) \cup C$
$(A -B) \cap C$
Let $A$ and $B$ be two sets such that $n(A) = 0.16,\,n(B) = 0.14,\,n(A \cup B) = 0.25$. Then $n(A \cap B)$ is equal to
The shaded region in the given figure is
If $A$ and $B$ are any two sets, then $A \cap (A \cup B)$ is equal to
If $n(A) = 3$ and $n(B) = 6$ and $A \subseteq B$. Then the number of elements in $A \cap B$ is equal to
If $A=\{3,6,9,12,15,18,21\}, B=\{4,8,12,16,20\},$ $C=\{2,4,6,8,10,12,14,16\}, D=\{5,10,15,20\} ;$ find
$C-D$