Question

Statements: No chair is a table.
Some tables are doors.
All plastics are chairs.
Conclusions: I. No door is a plastic.
II. No chair is a door.

• 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 D if neither conclusion I nor conclusion II follows.

There are two cases possible.

No door is plastic.

This is a possibility not always correct

No chair is door.

This is possibility not always correct.

Thus both conclusion I and II are incorrect.

Hence, Option D is correct.