determine whether the following argument is valid or invalid: if david killed goliath, then goliath is dead. goliath is dead or the earth is flat. ∴ the earth is flat.

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 16CT: Let P represent any statement. Classify as true or false. a P and P b P or P
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determine whether the following argument is valid or invalid: if david killed goliath, then goliath is dead. goliath is dead or the earth is flat. ∴ the earth is flat.
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