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