Thinking Mathematically (6th Edition)

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

Chapter 3 - Logic - 3.7 Arguments and Truth Tables - Exercise Set 3.7 - Page 191: 40


The symbolic form of the argument is: \[\frac{\begin{align} & p\to \tilde{\ }q \\ & r\to q \\ \end{align}}{\therefore \tilde{\ }p\wedge \tilde{\ }r}\ \] And the argument is invalid.
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