Prove That A ∩ (A’ ∪ B) = A ∩ B

Prove That A ∩ (A’ ∪ B) = A ∩ B

Question:

For any two sets \( A \) and \( B \), prove that:

\[ A\cap(A’\cup B)=A\cap B \]

Solution

\[ A\cap(A’\cup B) \] \[ =(A\cap A’)\cup(A\cap B) \] \[ =\phi\cup(A\cap B) \] \[ =A\cap B \]

Hence proved.

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