If $X=\{a, b, c, d\}$ and $Y=\{f, b, d, g\},$ find
$Y-X$
Find the union of each of the following pairs of sets :
$A = \{ x:x$ is a natural number and multiple of $3\} $
$B = \{ x:x$ is a natural number less than $6\} $
If $A, B, C$ are three sets, then $A \cap (B \cup C)$ is equal to
If $X=\{a, b, c, d\}$ and $Y=\{f, b, d, g\},$ find
$X \cap Y$
If $A \cap B = B$, then