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Statements: All pens are books. All books are papers. Some papers are files. Conclusions: I. All pens are papers.
II. Some pens are files. Which conclusion(s) logically follow?

Competition practiceSyllogism
  • AOnly I follows
  • BBoth I and II follow
  • COnly II follows
  • DNeither I nor II follows

Step-by-Step Solution

Pens ⊆ books ⊆ papers, so all pens are papers (I follows). 'Some papers are files' gives no definite link between pens and files, so II does not follow.
Answer: A) Only I follows

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