If $A$ and $B$ are sets, then $A \cap (B -A)$ is
$\phi $
$A$
$B$
None of these
Let $A$ and $B$ be two sets. Then
If $X=\{a, b, c, d\}$ and $Y=\{f, b, d, g\},$ find
$Y-X$
If $A, B$ and $C$ are any three sets, then $A -(B \cup C)$ is equal to
Find the intersection of each pair of sets :
$X=\{1,3,5\} Y=\{1,2,3\}$
Sets $A$ and $B$ have $3$ and $6$ elements respectively. What can be the minimum number of elements in $A \cup B$