Statements: a. Some years are decades. b. All centuries are decades. Conclusions: I. Some centuries are years. II. Some decades are years. III. No century is a year.

Only conclusion II follows
Only conclusions I and II follow
Only conclusions I and III follow
Only conclusion I follows

Correct Answer:

Explanation:

First Premise is Particular Affirmative (I-type).
Second Premise is Universal Affirmative (A-type).
All centuries are decades. ↔ Some decades are years.
A + I ⇒ No Conclusion
Conclusion II is Converse of the first Premise.
Conclusions I and III form Complementary Pair. Therefore, either I or III follows.

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