Question

If $A-B=\varphi$ and $B-A=\varphi$ then A and B are

• A. Overlapping
• B. Equivalent
• C. Disjoint
• D. Equal

Answer 1

Answer: (D)

Equal

if $A-B=\varphi$ and $B-A=\varphi$

hence this relation contains $A-B$ and $B-A$ doesn't contains any element,

so, the elements in $A$ & $B$ are same.