Statements: Some tapes are discs. Some discs are cassettes. Some cassettes are songs. Conclusions: Some songs are discs. Some cassettes are tapes. Some songs are tapes. No song is a disc.
Correct Answer: Only either I or IV follows
Explanation:
Since each combination of premises shall contain two particular premises, no definite conclusion can be drawn. However, I and IV involve the extreme terms of the second and third premises and form a complementary pair. Thus, either I or IV follows.
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