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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 Reasoning: Analyzing Statements and Conclusions

This problem involves analyzing logical statements to determine which conclusions necessarily follow. We are given two statements and two potential conclusions. We need to check the validity of each conclusion based on the given statements, assuming the statements are true.

Understanding the Statements

  • Statement 1: Some quilts are televisions. This means there is at least one item that is both a quilt and a television. It does not mean all quilts are televisions, nor does it mean all televisions are quilts.
  • Statement 2: Some televisions are lights. This means there is at least one item that is both a television and a light. It does not mean all televisions are lights, nor does it mean all lights are televisions.

Evaluating Conclusion (I)

Conclusion (I): Some quilts are lights.

Let's consider the relationship between quilts and lights based on the statements:

  • Statement 1 tells us about the overlap between quilts (Q) and televisions (T).
  • Statement 2 tells us about the overlap between televisions (T) and lights (L).

Just because some quilts are televisions and some televisions are lights, it does not automatically guarantee that any quilt is also a light. The group of televisions that are quilts might be entirely different from the group of televisions that are lights. Therefore, we cannot logically conclude that 'Some quilts are lights'.

Evaluating Conclusion (II)

Conclusion (II): All lights are televisions.

Statement 2 explicitly states, "Some televisions are lights." This implies that there is an intersection between the set of televisions and the set of lights. However, it does not provide information about *all* lights. There could be lights that are not televisions. The statement "Some T are L" does not allow us to infer "All L are T".

For example, imagine 100 items. 20 are quilts, 30 are televisions, and 40 are lights. If 10 quilts are also televisions, and 15 televisions are also lights, it's possible that none of the lights are the same items as the quilts, and that many lights are not televisions at all.

Final Verdict

Based on the analysis, neither Conclusion (I) nor Conclusion (II) can be logically derived from the given statements. The relationship between quilts and lights is not definitively established, and the scope of "lights" in relation to "televisions" is limited by the word "some".

Therefore, the correct option 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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