Formal Logic: Immediate Inferences
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Questions and Answers

What does the Latin word 'in-ferre' mean?

  • to deny or negate
  • to compare or contrast
  • to bear or to produce (correct)
  • to analyze or evaluate

    • How many types of inference are mentioned in the text?

  • Four
  • Two (correct)
  • Five
  • Three

    • What is the characteristic of Mediate Inference?

  • It has no premises
  • It has no conclusion
  • It has a middle proposition (correct)
  • It involves only two propositions

    • What is the characteristic of Immediate Inference?

    <p>It involves only two propositions</p> Signup and view all the answers

    What is the 'traditional square of opposition' related to?

    <p>Opposition of proposition</p> Signup and view all the answers

    What is the conclusion of the Mediate Inference example provided?

    <p>All Boholanos are Asians</p> Signup and view all the answers

    What is the first requisite for opposition?

    <p>The opposite propositions have the same subject and predicate terms</p> Signup and view all the answers

    What is the oppositional relation between two propositions that differ both in quantity and quality?

    <p>Contradiction</p> Signup and view all the answers

    Which of the following sets of opposition is under contrariety?

    <p>A and E</p> Signup and view all the answers

    What is the oppositional relation between two particular propositions that differ as to their quality?

    <p>Sub-contrariety</p> Signup and view all the answers

    What is the total number of oppositional relations in Aristotelian logic?

    <p>4</p> Signup and view all the answers

    What is the requisite for determining the truth value of the opposite proposition?

    <p>The truth value of the opposite proposition is determined in relation to the assigned truth value of the given proposition</p> Signup and view all the answers

    What is the conclusion when a universal statement is false according to Rule 2b?

    <p>The particular statement is undetermined or undecided</p> Signup and view all the answers

    What is the relationship between contraries according to Rule 1?

    <p>They cannot be true at the same time</p> Signup and view all the answers

    What is the conclusion when a contrary is true according to Rule 1?

    <p>The other contrary is false</p> Signup and view all the answers

    What is the relationship between contraries according to Rule 2?

    <p>They cannot be false at the same time</p> Signup and view all the answers

    What is the conclusion when a contrary is false according to Rule 2?

    <p>The other contrary is undetermined or undecided</p> Signup and view all the answers

    What is the relationship between sub-contraries according to Rule 1?

    <p>They cannot be false at the same time</p> Signup and view all the answers

    What is the implication of the universal being true according to Rule 1a?

    <p>The particular must also be true.</p> Signup and view all the answers

    What is the relationship between I and A according to Rule 1a?

    <p>If A is true, I must be true.</p> Signup and view all the answers

    What is the result when applying the rule of contrariety to a true statement?

    <p>The opposite is false</p> Signup and view all the answers

    What is the relationship between sub-contraries according to the Law of Sub-contrariety?

    <p>They may be true at the same time</p> Signup and view all the answers

    What is the implication of the particular being true according to Rule 1b?

    <p>The universal is undetermined.</p> Signup and view all the answers

    What is the relationship between O and E according to Rule 1b?

    <p>If O is true, E may be true or undetermined.</p> Signup and view all the answers

    What is the truth value of the statement 'Some students are not persons' if 'All students are persons' is true?

    <p>False</p> Signup and view all the answers

    What is the implication of the particular being false according to Rule 2a?

    <p>The universal is false.</p> Signup and view all the answers

    What is the result when applying the rule of sub-alternation to a false statement?

    <p>The opposite is true</p> Signup and view all the answers

    What is the relationship between the statements 'All trees are plants' and 'No trees are plants'?

    <p>They are contradictories</p> Signup and view all the answers

    What is the relationship between I and A according to Rule 2a?

    <p>If I is false, A is also false.</p> Signup and view all the answers

    What is the truth value of the statement 'Some politicians are not women' if 'Some politicians are women' is true?

    <p>Doubtful</p> Signup and view all the answers

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