MODR 1770 Study Guide - Modus Tollens, Modus Ponens, Deductive Reasoning
11 Mar 2014
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Note: the following are questions that we"ll work on together in lecture monday. In order to prepare for the test, it is recommended that you review group work assignments, go back to chapter questions, and for deductive logic, go back to the practice questions that were posted on moodle. Decide whether the following arguments are valid or invalid: if i perceive what appears to be a red door, then there really is a red door there. So, i perceive what appears to be a red door: if laws could stop crime, there would be no crime. Instant-grati cation freaks who don"t care about the environment or environmental issues are the true enemies of the planet. Thus, people who drive suvs are the true enemies of the planet: for any syllogism above that"s valid, decide whether it is sound or unsound.
