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

Competition practiceSyllogism
  • ANeither I nor II follows
  • BEither I or II follows
  • COnly I follows
  • DOnly II follows

Step-by-Step Solution

Neither can be proved from the premises, but 'some pens are blue' and 'no pen is blue' are complementary, so either I or II follows.
Answer: B) Either I or II follows

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