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Statements: Some books are pens. No pen is a pencil. Conclusions: I. Some books are not pencils.
II. All pens are books. Which conclusion(s) logically follow?

Competition practiceSyllogism
  • ANeither I nor II follows
  • BOnly I follows
  • CBoth I and II follow
  • DOnly II follows

Step-by-Step Solution

The books that are pens are, by the second statement, not pencils; therefore some books are not pencils (I follows). 'All pens are books' is not supported — only some books are pens (II does not follow).
Answer: B) Only I follows

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