Statements: (a) Some stones are gold. (b) Some gold are banks. Conclusions: I. Some banks are stones. II. Some gold are stones. III. No stone is bank. IV. Some banks are gold.

Only conclusions II and III follow
Only conclusions II and IV follow
Only conclusions I and IV follow
Only either conclusion III or IV and I follow

Correct Answer: Only conclusions II and IV follow

Explanation:

Both the Premises are Particular Affirmative (I-type).
No Conclusion follows from the two Particular Premises.
Conclusion II is Converse of the first statement.
Conclusion IV is Converse of the second statement.
Conclusions I and III form Complementary Pair. Therefore, either I or III follows.

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