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Statements: Some books are pens. Some pens are pencils. Conclusions: I. Some books are pencils.
II. No book is a pencil. Which conclusion(s) follow?

Competition practiceSyllogism
  • AOnly conclusion I follows
  • BEither conclusion I or II follows
  • COnly conclusion II follows
  • DNeither conclusion I nor II follows

Step-by-Step Solution

Neither 'some books are pencils' nor 'no book is a pencil' is individually definite, but together they are complementary and exhaustive, so exactly one must hold. Hence either I or II follows.
Answer: B) Either conclusion I or II follows

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