Question

Three statements are given followed by four conclusions I, II, III and IV. You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions if any, follow from the given statements.

Statements
Some books are novels.
All novels are magazines.
Some magazines are journals.

Conclusions
I. Some novels are journals.
II.Some books are magazines.
III. All books are magazines.
IV. No novel is a journal.

• A. Only conclusion II follows
• B. Only conclusion III follows
• C. Either conclusion I or II follows
• D. Either conclusion I or IV and conclusion II follow
• E. None of these

Answer 1

The correct option is D Either conclusion I or IV and conclusion II follow

The first and third premises are particular affirmative (I-type).
The second premise is a universal affirmative (A-type).
Some books are novels.
All novels are magazines.
$I+A\Rightarrow I$-type of conclusion.
Some books are magazines.
It is conclusion II.
Conclusions I and IV form a complementary pair. Therefore, either conclusion I or IV follows.