Determine Whether the Following Argument Is Valid $$\begin{array} { l } p \rightarrow r \\q \rightarrow r \\\neg ( p \vee q ) \\\hline \therefore \neg r \end{array}$$

question 55

Short Answer

Determine whether the following argument is valid: $$\begin{array} { l } p \rightarrow r \\q \rightarrow r \\\neg ( p \vee q ) \\\hline \therefore \neg r \end{array}$$

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