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 $U$)
Let $U$ be the universal set and $A \cup B \cup C = U$. Then $\{ (A - B) \cup (B - C) \cup (C - A)\} '$ is equal to
Fill in the blanks to make each of the following a true statement :
$\varnothing^ {\prime}\cap A$
If $U=\{a, b, c, d, e, f, g, h\},$ find the complements of the following sets:
$C=\{a, c, e, g\}$
If $A$ and $B$ are two sets, then $A \cap (A \cup B)'$ is equal to