Question

Statements: All wings are plastic.
No metal is a wing.
All metals are fibres.
Conclusions: I. Some fibres are metals.

II. Some fibres if they are wings must be plastic.

• A. if only conclusion I follows.
• B. if only conclusion II follows.
• C. if either conclusion I or conclusion II follows.
• D. if neither conclusion I nor conclusion II follows.
• E. if both conclusion I and conclusion II follow.

Answer 1

The correct option is E if both conclusion I and conclusion II follow.

There is one case possible.

Some fibers are metals.

This is always correct.

Some fibers which are wings must be plastic.

This is always correct.

Thus both conclusions I and II are correct.

Hence, Option E is correct.