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प्रश्न
Write the dual of the following.
p ∨ (q ∧ r) ≡ (p ∨ q) ∧ (q ∨ r)
उत्तर
p ∧ (q ∨ r) ≡ (p ∧ q) ∨ (q ∧ r)
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