Home Work Assignment 7
       
Phil 106 – Critical Thinking      Name________________________________
Fall 2007       Section_______________________________
Instructor: Ray Darr     Date_________________________________
       
     

 

 

Obversion - Obvert the following statements.  Place the letter that correspond to the correct answer in the space provided to the left of the question 

 

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 

 

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. 

 

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.