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Statements: All books are red. Some red things are blue. Conclusions: I. Some books are blue.
II. No book is blue. Which conclusion(s) follow?

Competition practiceSyllogism
  • AEither I or II follows
  • BOnly II follows
  • CNeither I nor II follows
  • DOnly I follows

Step-by-Step Solution

The blue red-things may or may not include books, so neither conclusion is definite. Being a complementary pair (some are / none are) on the same terms, either I or II must hold.
Answer: A) Either I or II follows

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