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Determine Whether the Following Argument Is Valid p→rq→rq∨¬r∴p\begin{array} { l } p \rightarrow r \\q \rightarrow r \\ q \vee \neg r \\\hline \therefore p\end{array}

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Determine whether the following argument is valid: p→rq→rq∨¬r∴p\begin{array} { l } p \rightarrow r \\q \rightarrow r \\ q \vee \neg r \\\hline \therefore p\end{array}

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