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BA Philosophy Deductive Logic — practice questions

Explore 8 free Deductive Logic questions in BA Philosophy Logic. Open each question or exercise to read its content, reference answers and available explanation.

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Deductive Logic questions and exercises with answers

Showing questions 1–8 of 8.

Sort each statement into A, E, I or ORead the answer and worked solution →Fill in the square of oppositionRead the answer and worked solution →Mark the term each clue namesRead the answer and worked solution →Sort the moves into valid and invalidRead the answer and worked solution →Match each fallacy to its flawRead the answer and worked solution →Sort each term: whole class or partRead the answer and worked solution →Spot the false rule in each setRead the answer and worked solution →Catch the first figure moodsRead the answer and worked solution →

Worked practice questions

Sort each statement into A, E, I or O

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Items
  1. Group
    A: affirms all
    Item
    All S is P
  2. Group
    E: denies all
    Item
    No fish are birds
  3. Group
    I: affirms some
    Item
    Some S is P
  4. Group
    O: denies some
    Item
    Some S is not P
  5. Group
    A: affirms all
    Item
    All bats can fly
  6. Group
    I: affirms some
    Item
    Some coins are old
  7. Group
    E: denies all
    Item
    No cats are dogs
  8. Group
    O: denies some
    Item
    Some P is not S
Groups
  1. Item
    A: affirms all
  2. Item
    E: denies all
  3. Item
    I: affirms some
  4. Item
    O: denies some
Instructions
Drag each statement onto its form: affirming or denying, and about all or about some.
_Source: Carveth Read, Logic: Deductive and Inductive (1914, public domain), Chapter VII, Immediate Inferences, section 2_

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Fill in the square of opposition

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Missing parts
  1. Answer
    contraries
    Choices
    1. contraries
    2. contradictories
  2. Answer
    sub-contraries
    Choices
    1. subalterns
    2. sub-contraries
Complete the statement
A and E are {0}: both can be false, but never both true. I and O are {1}: both can be true, but never both false.
Instructions
Tap the word that belongs in each blank.
_Source: Carveth Read, Logic: Deductive and Inductive (1914, public domain), Chapter VII, Immediate Inferences, section 6 Contrariety_

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Mark the term each clue names

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Clues and terms
  1. Clue
    The term shared by both premises, by which the other two are compared.
    Item
    Middle term
  2. Clue
    The term standing as predicate of the conclusion.
    Item
    Major term
  3. Clue
    The term standing as subject of the conclusion.
    Item
    Minor term
  4. Clue
    The evidentiary propositions offered to prove the point.
    Item
    Premises
  5. Clue
    The proposition established by comparing two others.
    Item
    Conclusion
  6. Clue
    An argument with one premise, or its conclusion, left unstated.
    Item
    Enthymeme
  7. Clue
    A chain of arguments whose middle conclusions are all suppressed.
    Item
    Sorites
  8. Clue
    A syllogism with a reason attached to one or both of its premises.
    Item
    Epicheirema
  9. Clue
    A specious argument that wears the form but is not really valid.
    Item
    Parasyllogism
Instructions
Read each call, tap its term on the board. Three in a line is bingo.
_Source: Carveth Read, Logic: Deductive and Inductive (1914, public domain), Chapter IX, Formal Conditions of Mediate Inference, section 2_

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