Question

Statements: All crows are birds.
All birds are parrots.
Some birds are sparrows.
Conclusions: I. Some parrots are not birds.
II. All sparrows are birds.

• 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

Answer: (D)

if neither conclusion I nor conclusion II follows.

There are two cases possible.

Some parrots are not birds.

This is a possibility not always correct.

All sparrow are birds.

This is a possibility not always correct.

Thus neither conclusions I nor II are correct.

Hence, Option D is correct.