Concept explainers
(a)
Provided conclusion is valid or invalid based on provided statement.
Statements: “No animal that eat meat are vegetarians. No cat is vegetarian. Felix is a cat.”
Conclusion: “Felix is a vegetarian.”
(b)
Provided conclusion is valid or invalid based on provided statement.
Statements: No animal that eat meat are vegetarians. No cat is vegetarian. Felix is a cat.
Conclusion: Felix is not a vegetarian.
(c)
Provided conclusion is valid or invalid based on provided statement.
Statements: No animal that eat meat are vegetarians. No cat is vegetarian. Felix is a cat.
Conclusion: Felix eats meat.
(d)
Provided conclusion is valid or invalid based on provided statement.
Statements: No animal that eat meat is a vegetarian. No cat is vegetarian. Felix is a cat.
Conclusion: All animal that do not eat meat are vegetarians.

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Chapter 3 Solutions
THINKING MATHEMATICALLY
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