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Philosophy 103: Introduction to Logic
Test on Categorical Propositions
Part II: Further Immediate Inferences

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RETURN TO CONTENTS OF TEST ON CATEGORICAL PROPOSITIONS

Directions: For all of the problems in this section, assume that the given proposition is true, perform the required inference, and state the resultant proposition. Be sure to state the resultant truth values.

1. What is the converse of "Some orchids are Cattleyas"?

2. What is the contrapositive of "Some computers are not IBM PC's"?

3. What is the obverse of "No business majors are philosophers"?

4. What is the converse of "Some Malay languages are not polynesian derivatives"?

5. What is the contrapositive of "Some laser shows are not mass cults"?

6. What is the obverse of "Some Rothko paintings are meditative works"?

7. What is the converse of "Some presidents are smilers"?

8. What is the obverse of "Some meteor showers are Geminids"?

9. What is the contrapositive of "Some crises are learning experiences"?

10. What is the converse of " No Presidents are persons who misplace tapes"?

Please check to see you have written the truth values for the problems in Part I and Part II.

CONTINUE TO PART III: SUCCESSIVE IMMEDIATE INFERENCES

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Test: Categorical Propositions, Part I: The Square of Opposition   Top of Page   Test: Categorical Propositions, PartIII: Successive Immediate Inferences and Venn Diagrams

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