Question

If A and B are disjoint sets then $A\Delta B=$___________

• A. $A\cup B$
• B. $A\cap B$
• C. A-B
• D. B-A

Answer 1

The correct option is A $A\cup B$

If $A$ and $B$ are disjoint sets, then

$A\cap B=\varphi$

We know that

$A△B=A\cup B-A\cap B$

$A△B=A\cup B-\varphi$

$A△B=A\cup B$

Hence, this is the answer.