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Question
Using the rules of negation, write the negation of the following:
(p → r) ∧ q
Solution
~ [(p → r) ∧ q] ≡ ~(p → r) ∨ ~q ....[Negation of conjunction]
≡ (p ∧ ~ r) ∨ ~q .....[Negation of implication]
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