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RRB NTPC Syllogism — practice questions — page 2

Explore 48 free Syllogism questions in RRB NTPC Reasoning. Open each question or exercise to read its content, reference answers and available explanation.

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Syllogism questions and exercises with answers

Showing questions 31–48 of 48.

Swapping subject and predicate is valid for which forms?Read the answer and worked solution →'No beetles are mammals' converts to which statement?Read the answer and worked solution →Which does NOT follow from 'All dogs are mammals'?Read the answer and worked solution →What is the obverse of 'All S are P'?Read the answer and worked solution →How is a categorical statement related to its obverse?Read the answer and worked solution →Contraposition interchanges and negates which two terms?Read the answer and worked solution →The existential viewpoint requires the subject category to have what?Read the answer and worked solution →If it rains the road is wet; it did not rain, so the road is dry. Fallacy?Read the answer and worked solution →From 'A or B' and 'A', concluding 'not B' commits which fallacy?Read the answer and worked solution →Which syllogism type is inductive rather than truly deductive?Read the answer and worked solution →A syllogism mainly tests whether a conclusion is?Read the answer and worked solution →In contemporary logic, can 'All A are B' be true when there are no A?Read the answer and worked solution →All pens are books and all books are desks. Which must be true?Read the answer and worked solution →All roses are flowers and some roses are red. What definitely follows?Read the answer and worked solution →All dogs are animals and all cats are animals. What follows?Read the answer and worked solution →No pen is a book and no book is a bag. What links pens and bags?Read the answer and worked solution →Some tigers are cats; all cats are animals. What is certain?Read the answer and worked solution →What is the converse of 'Some doctors are teachers'?Read the answer and worked solution →

Worked practice questions

Swapping subject and predicate is valid for which forms?

  1. A-form and E-form
  2. E-form and I-form
  3. I-form and O-form
  4. A-form and O-form
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Correct answer: B. E-form and I-form

E and I statements are equivalent to their converses, unlike A and O statements.

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'No beetles are mammals' converts to which statement?

  1. Some mammals are beetles
  2. No mammals are beetles
  3. All mammals are beetles
  4. All beetles are mammals
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Correct answer: B. No mammals are beetles

An E statement is symmetrical, so interchanging the terms keeps it true.

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Which does NOT follow from 'All dogs are mammals'?

  1. All dogs belong to mammals
  2. No dog is a non-mammal
  3. All mammals are dogs
  4. Every dog is a mammal
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Correct answer: C. All mammals are dogs

The group of mammals is larger than dogs, so reversing the statement is false.

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More Reasoning topics

Order of OperationsFloor PuzzleNumber SeriesVenn DiagramsData InterpretationStatement and Courses of ActionData SufficiencyCoding Decoding