Question

Let $A$ and $B$ be two sets, then $(A \cup B)' \cup\left(A' \cap B\right)$ is equal to

• A. $A '$
• B. $A$
• C. $B'$
• D. None of these

Answer 1

Answer: (A)

Draw the Venn-Euler's diagram and it would be clear that

$(A \cup B)^{\prime} \cup\left(A^{\prime} \cap B\right)=(A)^{\prime}$