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

Competition practiceSyllogism
  • AOnly II follows
  • BBoth I and II follow
  • CNeither I nor II follows
  • DOnly I follows

Step-by-Step Solution

Pens are pencils and no pen is a book, so those pencils (the pens) are not books (I follows). Books may still be pencils in some other way, so II is not certain.
Answer: D) Only I follows

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