In each of the questions below are given three statements followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements
Some mountains are rivers.
Some rivers are roads.
Some roads are windows.

Conclusions
I. Some windows are roads.
II. Some rivers are mountains.
III. Some roads are mountains.
IV. Some windows are rivers.

All follow

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Both I and II follow

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Both III and IV follow

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Both I and IV follow

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None follows

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Solution

The correct option is B Both I and II follow
All the three premises are particular
Affirmative (I-type)
We know that no conclusion follows from two or more particular premises.
Conclusion II is the converse of the first premise.
Conclusion I is the converse of the third premise.

Only I and II follow.

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Similar questions

Q. In each of the questions below are given four statements followed by four conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements
Some buildings are rivers.
Some mountains are both buildings and rivers.
Some roads are buildings.
All roads are trucks.

Conclusion
I. Some mountains are roads.
II. Some buildings are trucks.
III. Some rivers are roads.
IV. Some trucks are rivers.

Q. In each of the questions are given four statements followed by four numbered I, II, III and IV. You have to take the statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions follows from the given statements disregarding commonly known facts.

Statements
Some ponds are rivers.
Some rivers are mountains.
Some mountains are books.
Some books are papers.

Conclusions
I. Some books are rivers.
II. Some papers are ponds.
III. Some mountains are ponds.
IV. No paper is ponds.

Q. In each of the questions below are given four statements followed by four statements followed conclusions numbered I, II, III and IV. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements
Some pencils are windows.
All windows roads.
Some roads are cups.
All cups are chains.

Conclusions
I. Some chains are pencils.
II. Some cups are pencils.
III. Some chains are windows.
IV. Some roads are pencils.

Q. Some statements are given, followed by some conclusions. Consider the statements to be true even if they seem to be at variance from commonly known facts. Decide which of the given conclusions follow from the given statements.

Statements:
Some pencils are windows.
All windows are roads.
Some roads are cups.
All cups are chains.
Conclusions:
I. Some chains are pencils.
II. Some cups are pencils.
III. Some chains are windows.
IV. Some roads are pencils.

In each of the questions below are given three statements followed by three conclusions numbered I, II and III.

You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts.

Statements
All buildings are rivers.
All rivers are jungles.
All jungles are mountains.

Conclusions
I. Some mountains are rivers.
II. Some jungles are buildings.
III. Some mountains are buildings.

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