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

Question 25

Short Answer

Determine whether the following argument is valid:


p→rq→rq∨¬r\begin{array}{l}p \rightarrow r \\q \rightarrow r \\q \vee \neg r \\\hline\end{array}
∴¬p\therefore \neg p

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