Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 3 - Logic - Chapter Summary, Review, and Test - Review Exercises - Page 208: 63


Symbolic representation is\[\begin{align} & p\to \tilde{\ }q \\ & \frac{r\to q}{\therefore \tilde{\ }r\to p} \\ \end{align}\] and the argument is invalid.
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