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Question

Read the given statement(s) and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statement(s).

Statements:
All Hummingbirds are Storks.
Some Storks are Flamingos.

Conclusions:
I. Some Hummingbirds are Flamingos.
II. No Flamingos are Hummingbirds.

This question was previously asked in
RRB NTPC 2024 CBT 1 Question Paper (28-Aug-2025) (Shift 3)
The correct answer is
Neither conclusion (I) nor (II) follows.

Logical Reasoning Analysis

This question tests the ability to deduce conclusions from given statements using logical reasoning.

Statement Analysis

We are given two statements:

  • Statement 1: All Hummingbirds are Storks. (This means the set of Hummingbirds is entirely contained within the set of Storks).
  • Statement 2: Some Storks are Flamingos. (This means there is at least one Stork that is also a Flamingo, indicating an overlap between the sets of Storks and Flamingos).

Conclusion Analysis

We need to determine if the conclusions logically follow from the statements.

Conclusion I: Some Hummingbirds are Flamingos.

Statement 1 places Hummingbirds entirely within Storks. Statement 2 states an overlap between Storks and Flamingos. However, this overlap might involve only those Storks that are NOT Hummingbirds. It is possible that no Hummingbirds are Flamingos.

Therefore, Conclusion I does not necessarily follow.

Conclusion II: No Flamingos are Hummingbirds.

Since we cannot be sure that Conclusion I ('Some Hummingbirds are Flamingos') is false (it's only uncertain), we also cannot be sure that Conclusion II ('No Flamingos are Hummingbirds') is true. It is possible that the group of Storks which are Flamingos also includes some Hummingbirds.

Therefore, Conclusion II does not necessarily follow.

Final Answer Determination

Based on the analysis, neither Conclusion I nor Conclusion II is guaranteed to be true based on the given statements.

Thus, the correct option is the one stating that neither conclusion follows.

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Similar Questions

  1. Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

    Statements:
    All fathers are brothers.
    All brothers are sons.

    Conclusions:
    (I) All fathers are sons.
    (II) All brothers are fathers.
  2. Read the given statements and conclusions carefully and decide which of the conclusions logically follow(s) from the statements.

    Statements:
    (i) All ships are boats.
    (ii) All anchors are ships.

    Conclusions:
    I. All anchors are boats.
    II. Some ships are anchors.
    III. No anchor is boat.
    IV. Some boats are anchors.
  3. Read the given statements and decide which of the conclusions given in the options logically follow from the statements. 

    Statements: 

    1. All kitchens are bedrooms. 

    2. No bedroom is a hall.

  4. Read the given statements and decide which of the conclusions given in the options logically follow from the statements.

     Statements: 

    1. All guitars are instruments. 

    2. All instruments are bagpipes.

  5. Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.
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    Some balls bounce.
    All balls vibrate.
    Conclusions:
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    II. The balls that do not bounce, do not necessarily vibrate.

  6. Read the given statement(s) and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statement(s).

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    All Wolves are Rhinoceroses.
    No Rhinoceroses are Kangaroos.

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    II: Some Kangaroos are Wolves.
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    Statements:
    All doors are carpets.
    No carpet is a mat.

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    (I) No door is a mat.
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    2. Some apples are kiwis.

    Conclusions:
    1. Some kiwis are yellow.
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  9. Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow from the statements.

    Statements:
    1. All red are white.
    2. All white are black.

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    Statements:
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Important Questions from Syllogism

  1. The statements below are followed by conclusions labeled I, II and III. Assuming that the information in the statements is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements.

    Statements:

    All twenty are thirty.

    All thirty are forty.

    All forty are sixty.

    All sixty are seventy.

    Conclusions:

    I. Some forty are thirty.

    II. Some seventy are sixty.

    III. No thirty is twenty.
  2. The statements below are followed by two conclusions labelled I and II. Assuming that the information in the statements is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements.

    Statements:

    All Strong are animals.

    Some animals are Tigers.

    All Tigers are Sharp.

    Conclusions:

    I. Some Strong are Sharp.

    II. No Strong is Sharp.
  3. The statements below are followed by conclusions labelled I, II and III. Assuming that the information in the statements is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements.Statements:

    Some women are weak.

    Some weaks are female.

    All female are iron.

    All iron are gold.Conclusions:

    I. Some weaks are iron.

    II. Some gold are weaks.

    III. Some women are female.

  4. The statements below are followed by two conclusions labeled I and II. Assuming that the information in the statements is true, even if it appears to be at variance with generally established facts, decide which conclusion(s) logically and definitely follow(s) from the information given in the statements.Statements:

    Some teaspoons are glasses.

    All teddies are teaspoons.

    Conclusions:

    I. Some teddies are glasses.

    II. Some glasses are teddies.

  5. The statements below are followed by two conclusions labeled I and II. Assuming that the information in the statements is true, even if it appears to be at variance with generally Established facts, decide which conclusion(s) logically and definitely follow(s) from the Information, Given in the Statements.

    Statements:

    All bangles are rings.

    Some rings are toys.

    Some toys are dolls.

    Conclusions:

    I. Some rings are bangles.

    II. Some dolls are rings.
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