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Question
Using the rules of negation, write the negation of the following:
~(p ∨ q) → r
Sum
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Solution
~[~ (p ∨ q) → r] ≡ ~ (p ∨ q) ∧ ~ r ...[Negation of implication]
≡ (~ p ∧ ~ q) ∧ ~ r ...[De-morgan's law]
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