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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 Statements and Conclusions

We are given two statements and three conclusions. We need to determine which conclusions logically follow from the statements.

Statements:
  • Statement 1: No boats are ships.
  • Statement 2: All ship are steamers.
Conclusions:
  • Conclusion I: Some boats are steamers.
  • Conclusion II: No ships are boats.
  • Conclusion III: Some steamers are ships.

Evaluating Conclusion I: Some boats are steamers.

Statement 1 says boats and ships are completely separate categories. Statement 2 places ships entirely within the steamer category. However, these statements do not provide any information about the relationship between boats and steamers. It is possible that no boats are steamers, or some are, or all are. Therefore, Conclusion I does not necessarily follow from the given statements.

Evaluating Conclusion II: No ships are boats.

Statement 1 states "No boats are ships". This is a universal negative statement. The statement "No ships are boats" is the direct converse and is logically equivalent. If no boats are ships, then it must be true that no ships are boats. Therefore, Conclusion II follows directly from Statement 1.

Evaluating Conclusion III: Some steamers are ships.

Statement 2 states "All ships are steamers". This means the set of all ships is a subset of the set of steamers. If there exists at least one ship (which is implied), then that ship must also be a steamer. Thus, it logically follows that some steamers are ships. Therefore, Conclusion III follows from Statement 2.

Final Deduction

Based on the analysis:

  • Conclusion I: Does not follow.
  • Conclusion II: Follows.
  • Conclusion III: Follows.

Therefore, only conclusions II and III logically follow from the given statements.

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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. 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.
  5. 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.
  6. 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.
  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.

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    II: Some castles are mansions.

    II: No mansions are castles.
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    Statement: Some ponds are lakes. Some lakes are rivers. Some rivers are seas
    Conclusions:
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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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