In each of the questions below are given four 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 doors are windows.
No window is house.
Some houses are buildings.
All buildings are skies.

Conclusions
I. Some skies are doors.
II. Some skies are houses.
III. Some buildings are doors.

Only I follows

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Only II follows

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Only III follows

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Only II and III follow

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None of these

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Solution

The correct option is B Only II follows
All doors are windows.
No window is a house.
$A + E \Rightarrow E$ -type of conclusion
No door is a house.
Some houses are buildings.
All buildings are skies.
$I + A \to I$ -type of conclusion
Some houses are skies.
Conclusion II is the converse of it.

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Similar questions

Q. In each of the questions below are given four 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:-
I. All doors are windows.
II. No window is houses.
III. Some houses are buildings.
IV. All buildings are skies.

Conclusions:-
I. Some skies are doors.
II. Some skies are houses.
III. Some buildings are doors.

Q. In each of the questions below four statements are given 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 doors are windows.
No window is a house.
Some houses are buildings.
All buildings are skies.

Conclusions
I. Some skies are doors.
II. Some skies are houses.
Ill. Some buildings are doors.

In each of the questions below are given four 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 windows are doors.
All buildings are doors.
All doors are boats.

Conclusions
I. All windows are boats.
II. All buildings are boats.
III. Some boats are doors.

Q. 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 windows are doors.
All buildings are doors.
All doors are boats.

Conclusions
I. All windows are boats.
II. All buildings are boats.
III. Some boats are doors.

Q. In each of the questions below, there are 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
All doors are windows.
All houses are windows.
Some windows are soaps.

Conclusions
I. Some doors are houses.
II. Some houses are soaps.
III. Some soaps are doors.
IV. All soaps are windows.

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The correct option is B Only II followsAll doors are windows. No window is a house. A+E⇒E-type of conclusion No door is a house. Some houses are buildings. All buildings are skies. I+A→I-type of conclusion Some houses are skies. Conclusion II is the converse of it.

The correct option is B Only II follows
All doors are windows.
No window is a house.
$A + E \Rightarrow E$ -type of conclusion
No door is a house.
Some houses are buildings.
All buildings are skies.
$I + A \to I$ -type of conclusion
Some houses are skies.
Conclusion II is the converse of it.