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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 conclusion(s) logically follow(s) from the statements.
Statements:
Some quilts are televisions.
Some televisions are lights.
Conclusions:
(I) Some quilts are lights.
(II) All lights are televisions.

The correct answer is
Neither conclusion (I) nor (II) follows.

Syllogism Analysis: Quilts, Televisions, and Lights Logic

This question tests your ability to analyze logical statements and determine if the given conclusions are valid. We need to carefully examine the relationship between 'quilts', 'televisions', and 'lights' based on the provided statements.

Understanding Statements and Conclusions

In logical reasoning, statements are assumed to be true, and we must deduce whether conclusions logically follow from them. Let's break down the given information:

  • Statement 1: Some quilts are televisions.
  • Statement 2: Some televisions are lights.
  • Conclusion (I): Some quilts are lights.
  • Conclusion (II): All lights are televisions.

Analyzing Statement 1: Some quilts are televisions

This statement tells us there is an overlap between the set of 'quilts' and the set of 'televisions'. At least one quilt is a television, and at least one television is a quilt. However, it does not mean all quilts are televisions, nor does it mean all televisions are quilts.

Analyzing Statement 2: Some televisions are lights

Similarly, this statement indicates an overlap between the set of 'televisions' and the set of 'lights'. At least one television is a light, and at least one light is a television. It does not imply that all televisions are lights or vice versa.

Evaluating Conclusion (I): Some quilts are lights

From Statement 1, we know some quilts are televisions. From Statement 2, we know some televisions are lights. The issue here is that the group of 'televisions' that are 'quilts' might be completely different from the group of 'televisions' that are 'lights'. There is no guaranteed connection or overlap between 'quilts' and 'lights' based solely on these statements.

Imagine three groups: Group A (Quilts), Group B (Televisions), Group C (Lights). Statement 1 says A overlaps with B. Statement 2 says B overlaps with C. This doesn't force A to overlap with C. The overlap in B could be in different parts for each statement.

Therefore, Conclusion (I) does not logically follow.

Evaluating Conclusion (II): All lights are televisions

Statement 2 explicitly states, "Some televisions are lights." This phrasing indicates that only a portion of televisions are lights. It does not provide any information to suggest that the entire category of 'lights' is contained within the category of 'televisions'. It's possible for there to be lights that are not televisions.

For example, if we have 100 televisions and 10 lights, and 5 of those televisions are also lights, then "Some televisions are lights" is true. However, "All lights are televisions" would be false because 5 lights are not televisions.

Therefore, Conclusion (II) does not logically follow.

Final Deduction

Since neither Conclusion (I) nor Conclusion (II) can be definitively proven true based on the given statements, the correct logical outcome is that neither conclusion follows.

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Important Questions from Syllogism (Notes)

  1. Disregard commonly known facts. Which conclusion would follow on the basis of given statements only.
    Statement: Some bottles are car. some cars are cycle.
    Conclusion:
    (I) Some bottles are cycle is a possibility
    (II) All bottles are cycle
    In light of the above statements, choose the most appropriate answer from the options given below.
  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:
    Some canals are rivers.
    Some rivers are oceans.
    Some oceans are ponds.

    Conclusions:
    (I) All ponds are rivers.
    (II) All oceans are canals.
  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 bananas are apples.
    All apples are grapes.
    Some grapes are oranges.

    Conclusions:
    (I) All grapes are bananas.
    (II) All oranges are apples.
  4. Take the given statements to be true even if they seem to be at variance with commonly known facts. Then decide which of the given conclusions logically follow the given statements. 

    Statements : 

    0% chairs are tables. 

    All computers are chairs. 

    Some books are tables. 

    Conclusions : 

    I. Not a single table is a computer. 

    II. Some books are not chairs.

  5. Directions: Study the following Bar-chart and the data provided to answer the questions that follow: Sales of 3-different companies selling T-Shirts for the years from 2006 to 2009 are given. How much percentage of sales decreased for Brand X T-shirt in 2009 compared with 2007?

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