Let $A$ and $B$ be two sets then $(A \cup B)' \cup (A' \cap B)$ is equal to
$A'$
$A$
$B'$
None of these
(a) From Venn-Euler's Diagram, $\therefore (A \cup B)' \cup (A' \cap B) = A'$.
Draw appropriate Venn diagram for each of the following:
$A^{\prime} \cup B^{\prime}$
$(A \cup B)^{\prime}$
Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{ x:x$ is a perfect square $\} $
If $A$ is any set, then
$(A \cap B)^{\prime}$
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