Statements: All pens are pencils. Some pencils are erasers. Conclusion: Some pens are erasers. This conclusion:

  1. Definitely follows
  2. Is definitely false
  3. Does not necessarily follow
  4. Follows only if all erasers are pens
Answer

C) Does not necessarily follow

The pencils that are erasers might not be pens at all, so we can't be sure.

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