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Venn Diagram

Proof of n(A U B) = n(A) + n(B) – n (A ∩ B) by Venn Diagram

  1. Proof : Distribution Law of Union over Intersection
  2. Proof : Distribution Law of Intersection over Union
  3. De Morgan’s Laws
  4. Prove That A U (A ∩ B) = A
  5. Prove That : A ∩ (A U B) = A & (A – B) ∩ (B – A) = Φ
  6. n(A U B) = n(A) + n(B) – n (A ∩ B)
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