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Question

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 flats are villas.
No villa is an apartment.

Conclusions:
(I) No flat is an apartment.
(II) No apartment is a villa.

This question was previously asked in
RRB NTPC 2024 CBT 1 Question Paper (28-Aug-2025) (Shift 3)
The correct answer is
Both conclusions I and II follow.

Analyzing Syllogism: Statements and Conclusions

This solution provides a logical breakdown to determine which conclusions follow from the given statements.

Statement Analysis

  • Statement 1: All flats are villas.

    This statement establishes a universal affirmative relationship. It means the entire category of 'flats' is included within the category of 'villas'. In set theory terms, if $F$ represents the set of flats and $V$ represents the set of villas, then $F \subseteq V$.

  • Statement 2: No villa is an apartment.

    This statement establishes a universal negative relationship. It indicates that there is no common member between the set of 'villas' and the set of 'apartments'. Using set notation, if $A$ represents the set of apartments, then $V \cap A = \emptyset$. This also implies the symmetrical relationship $A \cap V = \emptyset$.

Conclusion Verification

  • Conclusion (I): No flat is an apartment.

    Given that all flats are villas ($F \subseteq V$) and no villa is an apartment ($V \cap A = \emptyset$), it logically follows that no flat can be an apartment. If something is a flat, it must be a villa, and since no villa is an apartment, that thing cannot be an apartment either. Therefore, $F \cap A = \emptyset$. This conclusion is valid.

  • Conclusion (II): No apartment is a villa.

    Statement 2 directly states "No villa is an apartment" ($V \cap A = \emptyset$). The nature of the "No X is Y" relationship is symmetrical. This means that if no villa is an apartment, then it must also be true that no apartment is a villa ($A \cap V = \emptyset$). This conclusion is directly supported by Statement 2 and is therefore valid.

Final Deduction

Both Conclusion I and Conclusion II are logically derived from the provided statements. Hence, both conclusions follow.

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Similar Questions

  1. 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.
  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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    Conclusions:
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  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 follow(s) from the statements.

    Statements:
    All pins are bugs.
    All pins are cows.

    Conclusions:
    (I): Some bugs are cows.
    (II): All cows are pins.
  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. 

    Conclusions:

     1. Some students know English language.

     2. Some students do not know English language.

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

    Statement 1 All bags are toys.
    Statement 2: Some toys are suitcases.
  6. Read the given statements and conclusions carefully and decide which of the conclusions logically follow(s) from the statements.

    Statements:
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    (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.
  7. 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 Wolves are Rhinoceroses.
    No Rhinoceroses are Kangaroos.

    Conclusions:
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    Statements:
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    No carpet is a mat.

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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 conclusion(s) logically follow(s) from the 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:

    Some students are players.

    All players are male.

    Conclusions:

    I. All males are players.

    II. Some males are students.

  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:

    No creative is an employer.

    All experts are creative.

    All workers are experts.

    Conclusions:

    I. No employer is an expert.

    II. No worker is an employer.

  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 follow(s) from the statements.

    Statements:

    Some actors are choreographers.

    All choreographers are producers.

    Not a single producer is a director.

    Conclusions:

    I. Some actors are directors.

    II. Not a single actor is a director.

  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 : 

    1. All flowers are tulips.

    2. No tulips are whites.

    Conclusions :

    I. All tulips are flowers.

    II. Some tulips are whites.

  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 rats are dogs.

    Some rats are hens.

    Conclusions:

    I. Some rats are dogs.

    II. Some hens are rats.

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