If A and B are disjoint sets, then B ? A?, where A? is complement of A is equal to

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Solution

Q.
If $A$ and $B$ are disjoint sets, then $B \cap A'$ , where $A'$ is complement of $A$ is equal to

1 $A$

2 $B$

3 $A'$

4 $B'$

Ans.
(2)

$A$ and $B$ are disjoint sets.

$∴$ $A \cap B = ϕ$

$B \cap A' = B - A = B$ $[∵ B & A are disjoint sets]$

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