Question

If $A$ and $B$ are non-empty sets such that $A \supset B$, then

• A. $B ' - A ' = A - B$
• B. $B' - A' = B - A$
• C. $A' - B' = A - B$
• D. $A' \cap B' = B - A$

Answer 1

Answer: (A)

$B ' - A ' = A - B$

Answer 2

Given that, $A \supset B$

So, by Venn diagram, we conclude that
$B'-A'=A-B$