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Quiz: Fundamental Logical Elements

Quiz Questions:​

1. What is the difference between coherence and consistency?​

a) There is no difference, the terms are synonyms. b) Consistency refers to non-contradiction, while coherence requires a meaningful connection. c) Coherence refers to non-contradiction, while consistency requires a meaningful connection. d) Consistency refers to the truth of statements, while coherence refers to their logical form.

2. Which of the following examples illustrates a necessary but not sufficient condition?​

a) Oxygen for human life b) A body temperature of 42°C for a medical emergency c) Achieving 100 points for the grade "excellent" d) Rain for 10 hours for wet ground

3. An argument is sound when:​

a) It is valid and at least one premise is true. b) It is valid and all premises are true. c) The conclusion is true, regardless of the premises. d) It contains no hidden assumptions.

4. Which of the following argument patterns corresponds to Modus Tollens?​

a) If A, then B. A. Therefore B. b) If A, then B. Not A. Therefore not B. c) If A, then B. Not B. Therefore not A. d) If A, then B. B. Therefore A.

5. Identify the hidden assumption in the following argument: "This medicine is natural, so it is safe."​

a) The medicine was recommended by a doctor. b) Natural substances are always safe. c) The medicine contains no artificial additives. d) The medicine is effective against the disease being treated.

Answers:​

  1. b) Consistency refers to non-contradiction, while coherence requires a meaningful connection.
  2. a) Oxygen for human life
  3. b) It is valid and all premises are true.
  4. c) If A, then B. Not B. Therefore not A.
  5. b) Natural substances are always safe.