Question

In each of the questions below are given three statements followed by three conclusions numbered 1, II and III. You have to take the given statements to be true evep 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 lanterns are walls.
No wall is brick.
Some bricks are chairs.

Conclusions
I. Some chairs are lanterns.
II. Some bricks are lanterns.
III. No chair is a lantern.

• A. Only I follows
• B. Only II follows
• C. Only either I or III follows
• D. Only III follows
• E. None of these
  

Answer 1

The correct option is C Only either I or III follows

All lanterns are walls
No wall is brick
$A+E\Rightarrow E$-type of conclusion
No lantern is a brick
Conclusion I and III form a complementary pair. Therefore, either I or III follows.