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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.

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  2. 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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  4. 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 conclusions logically follow(s) from the statement(s).

     Statement: 

    Most students know English language. 

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  5. Two statements are given below. Decide which of the options logically follow from these statements.

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Important Questions from Syllogism

  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 dancers are talented.

    Some girls are dancers.

    Conclusions:

    I. Some girls are talented.

    II. All talented are girls.

    III. All girls are talented.

  2. 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 directors are actors.

    No actor is a producer.

    All choreographers are directors.

    Conclusions:

    I. No choreographer is producer.

    II. Some actors are choreographers.

    III. No director is a producer.

  3. 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 follows from the statements.

    Statements:

    All lemons are plums.

    All plums are dates.

    Some dates are mangoes.

    Conclusions:

    I. Some lemons are mangoes.

    II. Some mangoes are plums.

    III. All lemons are dates.

    IV. Some mangoes are dates.

  4. 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:

    Some cards are postcards.

    Some cards are envelopes.

    All envelopes are copies.

    Conclusions:

    I. Some copies are envelopes.

    II. Some postcards are copies.

    III. Some cards are copies.

  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.

    Statements:

    All employees are tax-payers.

    Some employees are farmers.

    Some farmers are doctors.

    Conclusions:

    I. No farmer is a tax-payer.

    II. Some farmers are tax-payers.

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