Question

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.

• A. Only I follows
• B. Only II follows
• C. Only III follows
• D. Only II and III follow
• E. None of the above

Answer 1

The correct option is B Only II follows

Mediate term of the following statement are
All doors are windows (A-type)
$\downarrow$
No window is house. (E-type)
$A+E\to E-type$
No doors is house
Some house are building. (I-type)
$\downarrow$
All buildings are skies. (E-type)
$I+A\to I-type$
some houses are skies
Conversion some skies are houses.
(Conclusion II follows)
or

only II follows.