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

Competition practiceSyllogism
  • ANeither conclusion follows
  • BOnly conclusion I follows
  • COnly conclusion II follows
  • DBoth conclusions follow

Step-by-Step Solution

The books that are pens cannot be pencils (no pen is a pencil), so some books are not pencils — I follows. Pencils are erasers and no pencil is a pen, so those erasers are not pens — II follows.
Answer: D) Both conclusions follow

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