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Question

Two statements are given, followed by three conclusions, I, II and III. Consider the statements to be true even if they seem to be at variance with commonly known facts, and decide which of the given conclusions, if any, follow (s) from the given statements.

Statement 1: No boats are ships.
Statement 2: All ship are steamers.

Conclusion I: Some boats are steamers.
Conclusion II: No ships are boats.
Conclusion III: Some steamers are ships.

This question was previously asked in
RRB ALP/Technician 2018 CBT 2 Electronics Mechanic Question Paper (23-Jan-2019) (Shift 1)
The correct answer is
Only conclusions II and III follow.

Analyzing Syllogistic Statements and Conclusions

The problem requires determining which conclusions logically follow from the given statements using deductive reasoning.

Statement Analysis

  • Statement 1: No boats are ships. (This is a universal negative statement, meaning the sets 'boats' and 'ships' are completely separate.)
  • Statement 2: All ship are steamers. (This is a universal affirmative statement, meaning the set 'ships' is entirely contained within the set 'steamers'.)

Conclusion Evaluation

  • Conclusion I: Some boats are steamers. Statement 1 separates boats and ships. Statement 2 places ships within steamers. However, this configuration doesn't guarantee any overlap between boats and steamers. Boats could be entirely separate from steamers. Therefore, this conclusion does not necessarily follow.
  • Conclusion II: No ships are boats. Statement 1 directly states "No boats are ships". This is logically equivalent to "No ships are boats". Thus, this conclusion follows directly from Statement 1.
  • Conclusion III: Some steamers are ships. Statement 2 states "All ships are steamers". If every ship is a steamer, it logically follows that some steamers (specifically, those that are ships) must be ships. Thus, this conclusion follows directly from Statement 2.

Final Determination

Based on the analysis, only conclusions II and III logically follow from the given statements.

The correct option is the one stating that only conclusions II and III follow.

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Similar Questions

  1. Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and decide which conclusion(s) logically follow(s) from the given statements.
    Statements:
    All water is milk.
    No milk is oil.
    Conclusions:
    (I) Some milk is water.
    (II) No oil is water.
  2. Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and decide which conclusion(s) logically follow(s) from the given statements.
    Statements:
    Some vegetables are fruits.
    Some fruits are sweets.
    Conclusions:
    (I) Some fruits are vegetables.
    (II) Some sweets are vegetables.
  3. Two statements are given, followed by two conclusions, I and II. Consider the statements to be true even if they seem to be at variance with commonly known facts, and decide which of the given conclusions, if any, follow (s) from the given statements.

    Statement 1: All bees are hornets.
    Statement 2: Some bees are wasps.

    Conclusion I: Some hornets are wasps.
    Conclusion II: Some wasps are bees.
  4. Given below are two statements, followed by three conclusions, I, II and III. You have to consider the statements to be true even if they seems to be at variance with commonly known facts. You have to decide which of the given conclusions, if any, follow(s) from the given statements.

    Statement 1 : All polymers are plastic.
    Statement 2 : No rubber is plastic.

    Conclusion I : Some polymers are rubber.
    Conclusion II : Some plastics are polymer.
    Conclusion III : No polymer is rubber.
  5. Given below are two statements, followed by two conclusions, I and II. You have to consider the statements to be true even if they seems to be at variance with commonly known facts. You have to decide which of the given conclusions, if any, follow(s) from the given statements.

    Statement 1 : All minutes are seconds.
    Statement 2 : No seconds are hours.

    Conclusion I : No hours are seconds.
    Conclusion II : Some minutes are hours.
  6. Two statements are given, followed by three conclusions, I, II and III. Consider the statements to be true even if they seem to be at variance with commonly known facts, and decide which of the given conclusions, if any, follow (s) from the given statements.
    Statement 1: No boats are ships.
    Statement 2: All ship are steamers.
    Conclusion I: Some boats are steamers.
    Conclusion II: No ships are boats.
    Conclusion III: Some steamers are ships.
  7. Two statements are given, followed by two conclusions, I and II. Consider the statements to be true even if they seem to be at variance with commonly known facts, and decide which of the given conclusions, if any, follow (s) from the given statements.
    Statement 1: All bees are hornets.
    Statement 2: Some bees are wasps.
    Conclusion I: Some hornets are wasps.
    Conclusion II: Some wasps are bees.
  8. Consider the given statement as true and decide which of the given conclusions can definitely be drawn from the given statements:

    Statement:

    All rivers are holy. All gods are holy.

    Conclusion:

    1. All rivers are gods.

    2. All gods are rivers.

  9. In this question, two statements are given, followed by three conclusions labelled I, II and III. You have to consider the statements to be true even if they seem to be at variance with commonly known facts, and decide which of the given conclusions, if any, follow(s) from the given statements.

    Statements:

    All mansions are palaces.

    No castles are palaces.

    Conclusions:

    I: Some palaces are mansions.

    II: Some castles are mansions.

    II: No mansions are castles.
  10. Take the given statements to be true and decide which of the conclusions logically follows from the given statements.

    Statement: Some ponds are lakes. Some lakes are rivers. Some rivers are seas
    Conclusions:
    1. Some seas are lakes
    2. No sea is a lake

Important Questions from Syllogism

  1. Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and decide which conclusion(s) logically follow(s) from the given statements.
    Statements:
    All water is milk.
    No milk is oil.
    Conclusions:
    (I) Some milk is water.
    (II) No oil is water.
  2. Read the given statements and conclusions carefully. You have to take the given statements to be true even if they seem to be at variance from commonly known facts and decide which conclusion(s) logically follow(s) from the given statements.
    Statements:
    Some vegetables are fruits.
    Some fruits are sweets.
    Conclusions:
    (I) Some fruits are vegetables.
    (II) Some sweets are vegetables.
  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 sparrows are owls.
    No sparrow is a parrot.
    Conclusions:
    (I): No owl is a parrot.
    (II): No parrot is a sparrow.
  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:
    All forests are hills.
    Some hills are deserts.
     

    Conclusions:
    (I): All hills are forests.
    (II): Some deserts are hills.

  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 bottles are ludo.
    All ludo are dancer.
     

    Conclusions:
    (I): Some dancers are ludo.
    (II): All bottles are dancers.

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