Exam #1

Every sound argument is valid . T. An invalid argument can have all true premises and a true conclusion . T. State whether the following arguments are . valid. or . invalid (3 points each): 12. Gizmo is a cat only if Gizmo is a mammal. Gizmo is not a cat. So, Gizmo is not a mammal . invalid. 13. Either reptiles are cold blooded or grass is green ................
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