Question

Let $A$ and $B$ be two sets in the universal set. Then $A-B$ equals

• A. $A\cap B^{\prime }$
• B. $A^{\prime }\cap B$
• C. $A\cap B$
• D. None of these

Answer 1

Answer: (A)

$A\cap B^{\prime }$

Using Venn diagram it is very clear that $A-B=A\cap B^{\prime }$