Fill in the blanks to make each of the following a true statement :
$A \cap A^{\prime}=\ldots$
Fill in the blanks to make each of the following a true statement :
$A \cup A^{\prime}=\ldots$
If $A$ and $B$ be any two sets, then $(A \cap B)'$ is equal to
The shaded region in venn-diagram can be represented by which of the following ?
If $n(U)$ = $600$ , $n(A)$ = $100$ , $n(B)$ = $200$ and $n(A \cap B )$ = $50$, then $n(\bar A \cap \bar B )$ is
($U$ is universal set and $A$ and $B$ are subsets of $U$)