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Am I Logical?
Contributed by: Koepsell
  • 1. Valid arguments
A) infer their conclusions
B) have true premises
C) may not have false conclusion
D) may have false conclusions
  • 2. All men are mortal
A) is not a proposition
B) implies there are men
C) implies all men are mortal
D) is a contradiction
  • 3. the argument: if p then q, q, therefore p
A) is invalid
B) is a categorical argument
C) is valid
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) one
B) four
C) two
D) three
  • 6. Some men are swimmers. Some swimmers are Olympic athletes. Some men are Olympic athletes
A) is invalid
B) is not a syllogism
C) is sound
D) is valid
  • 7. "implies" and "infers"
A) have differing conotations
B) are equivalent
C) are meaningless
D) are interchangeable
  • 8. "and/or" is _____ with "or"
A) the converse
B) contradictory
C) opposite
D) logically equivalent
  • 9. logic is the science of
A) thinking
B) implication
C) fallacies
D) truth
  • 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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