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Homepage > Logic > Tests > Propositions > Answers |
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Given the truth of "No splitscreens are practicums" what can be validly inferred about the truth or falsity of each of the following propositions? (Cite the proper logical relation and appropriate truth value for each successive inference. You may abbreviate by using "S" and "P" for the appropriate classes in this section of the test only.) 1. Some practicums are not splitscreens. (Note: This statement is the last line in the proof..)
2. All nonpracticums are nonsplitscreens. (Note: This statement is the
last line in the proof..)
Part IV. Venn Diagrams: Symbolize the following statements by drawing the appropriate Venn Diagram. 1. Some sculptors are painters. 2. No peddlers are millionaires. 3. All merchants are speculators. 4. Some musicians are not pianists. 5. All ribosomes are structures in the cytoplasm. Optional Problems: 1. Translate the following statement into standard form: "Any strain imposed on the mind will be reflected in the eyes, and similarly
anything which rests the mind will benefit them." (C.S. Price, The Improvement of
Sight.) Next, state the logical relation obtaining between the first independent clause and the
second independent clause. Finally, if the first independent clause is false, what is the truth value of the
second? 2. Watson writes, "Monday morning found us on our way to the famous university
town--an easy effort on the part of Holmes, who had no roots to pull up, but one which
involved frantic planning and hurrying on my part, as my practice was by this time not
inconsiderable." (A. Conan Doyle, "The Adventure of the Creeping Man")
Supposing that what Watson writes is true, does it follow that Watson's practice is large?
What is the logical relation involved in this inference? End of Test on Categorical Propositions |
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