Home Work Assignment 7 | |||

Phil 106 – Critical Thinking |
Name________________________________ |
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Fall 2007 |
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Instructor: Ray Darr |
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**Obversion - Obvert the following statements. Place the letter that correspond to the correct answer in the space provided to the left of the question **

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**1. ______All non-students are non-enrolled. **a. No students are enrolled people b. No non-students are enrolled people. c All non-enrolled people are non-students d. can’t obvert

**2._____ Some logic students are not interested in school. **a. Some logic students are people interested in school b. Some non-logic students are people non interested in school c. Some logic students are people non-interested in school. d. Can’t obvert

**3._____ No exorcists are union workers. **a. No union workers are exorcists b. No non-exorcists are union workers c. All exorcists are non-union workers. d. Can’t obvert

**4.______No tenured faculty are instructors.** a. No instructors are non- tenured faculty. b. No non-tenured faculty are instructors. c. All tenured faculty are non-instructors d. can’t obvert

**5.______ All bricklayers are heavy drinkers. **a. No bricklayers are non-heavy drinkers b. No non-bricklayers are heavy drinkers c. All heavy drinkers are bricklayers. D. Can’t obvert

** Place the letter that correspond to the correct answer in the space provided to the left of the question **

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**6. ______ **The relationship established between the I form categorical proposition and the O form categorical propositions is one of a. sub-contraries b contrary c. contradiction d super implication.** **

**7.______ **The relationship established between the A form categorical proposition and the E form categorical propositions is one of sub-contraries b contrary c. contradiction d super implication.

**8.______** The relationship established between the A form categorical proposition and the I form categorical propositions is one of sub-contraries b contrary c. contradiction d sub- implication.

**9.______**a. ** **Sub-contraries b. Contradictions c. Contraries d Sub-implications can both be true at the same time. However they both can not be false at the same time.

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**10._____** a. ** **Sub-contraries b. Contradictions c. Contraries d Sub-implications can not both be true at the same time. However they both can not be false at the same time.

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