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Negation of p ∧ (q ∧ ∼ (p ∧ q)) is

1. (~ (p ∧ q)) ∨ p
2. p ∨ q
3. ~ (p ∨ q)
4. (~ (p ∧ q) ∧ q

Correct answer: (~ (p ∧ q)) ∨ p

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