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Indian Air Force AFCAT II Number Series — practice questions — page 4

Explore 112 free Number Series questions in Indian Air Force AFCAT II Reasoning. Open each question or exercise to read its content, reference answers and available explanation.

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Number Series questions and exercises with answers

Showing questions 91–112 of 112.

Deduction against inductionRead the answer and worked solution →Tap every statement that follows from 'All cats are animals'Read the answer and worked solution →Complete the conversion ruleRead the answer and worked solution →Which reversal is safe?Read the answer and worked solution →Complete the definition of a sequenceRead the answer and worked solution →Sequence or series?Read the answer and worked solution →True or false: sequences and seriesRead the answer and worked solution →Complete the geometric progression ruleRead the answer and worked solution →Spotting the ruleRead the answer and worked solution →Constant difference, or constant ratio?Read the answer and worked solution →Order the steps: crack a number seriesRead the answer and worked solution →True or false: geometric progressionsRead the answer and worked solution →Finding a termRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every sequence with a constant ratioRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Finite or infinite?Read the answer and worked solution →Complete the geometric meanRead the answer and worked solution →True or false: reading a series questionRead the answer and worked solution →

Worked practice questions

Deduction against induction

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Questions
  1. Question
    Concluding a general rule from many observed cases is
    Choices
    1. deduction
    2. conversion
    3. induction
    Correct choice
    induction
  2. Question
    Concluding about one case from a general rule is
    Choices
    1. deduction
    2. induction
    3. analogy
    Correct choice
    deduction
  3. Question
    Which guarantees its conclusion if the premises are true?
    Choices
    1. an induction
    2. a valid deduction
    3. an analogy
    Correct choice
    a valid deduction
Which kind of inference is being described. Source: Logic: Deductive and Inductive, Carveth Read (1898), public domain.

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Tap every statement that follows from 'All cats are animals'

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Questions
  1. Items
    1. Text
      Some animals are cats
      Matches the category
      Yes
    2. Text
      No cat fails to be an animal
      Matches the category
      Yes
    3. Text
      All animals are cats
      Matches the category
      No
    4. Text
      Some animals are not cats
      Matches the category
      No
    5. Text
      No cats are animals
      Matches the category
      No
    Category
    Follows from 'All cats are animals'
Only what the premise licenses, nothing more. Source: Logic: Deductive and Inductive, Carveth Read (1898), public domain.

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Complete the conversion rule

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Missing parts
  1. Answer
    distributed
    Choices
    1. distributed
    2. affirmed
    3. negated
  2. Answer
    premise
    Choices
    1. premise
    2. conclusion
    3. converse
  3. Answer
    cannot
    Choices
    1. cannot
    2. can
    3. must
Complete the statement
A term that is {0} in the conclusion must already have been distributed in the {1}. This is why the form O {2} be truly converted.
The rule that decides every reversal question. Source: Logic: Deductive and Inductive, Carveth Read (1898), public domain.

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More Reasoning topics

Distance and DirectionAnalogiesAnalogyBlood RelationsCoding DecodingVenn DiagramsNumber Series, Coding and Decoding and Odd Man OutDirection Sense