In this question, three statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follows/follow from the statements.
Statements:
All doors are walls.
All walls are rooms.
All rooms are flats.
Conclusions:
I. Some flats are doors.
II. All walls are flats.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Both conclusions I and II follow.
The least possible Venn Diagram for the given statements is drawn below:
Conclusions:
I. Some flats are doors → True (As all doors are walls, all walls are rooms, and all rooms are flats, so, some flats are doors is also true.)
II. All walls are flats → True (As all doors are walls, all walls are rooms, and all rooms are flats, so, all walls are flats is also true.)