Question
Using properties of sets, show that: $A \cap (A \cup B) = A$
✓
Answer
We know that if $A \subset B$then
$A \cap B = A$
Also$A \subset A \cup B$
$\therefore A \cap (A \cup B) = A$
$A \cap B = A$
Also$A \subset A \cup B$
$\therefore A \cap (A \cup B) = A$
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