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Am I Logical?
Contributed by: Koepsell
  • 1. Valid arguments
A) have true premises
B) may not have false conclusion
C) may have false conclusions
D) infer their conclusions
  • 2. All men are mortal
A) is a contradiction
B) implies there are men
C) implies all men are mortal
D) is not a proposition
  • 3. the argument: if p then q, q, therefore p
A) is a categorical argument
B) is valid
C) is invalid
D) is sound
  • 4. in a valid argument
A) if the premises are all true the conclusion must be true
B) no conclusion may be false
C) no premise may be false
D) all premises are necessarily true
  • 5. there are ___ quantifiers for categorical syllogisms
A) four
B) one
C) two
D) three
  • 6. Some men are swimmers. Some swimmers are Olympic athletes. Some men are Olympic athletes
A) is invalid
B) is valid
C) is sound
D) is not a syllogism
  • 7. "implies" and "infers"
A) are meaningless
B) are equivalent
C) have differing conotations
D) are interchangeable
  • 8. "and/or" is _____ with "or"
A) contradictory
B) the converse
C) opposite
D) logically equivalent
  • 9. logic is the science of
A) truth
B) thinking
C) implication
D) fallacies
  • 10. a proposition
A) may be both true and false
B) is either true or false
C) is an assertion
D) is any statement
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