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Which conclusion(s) follow from 'All lions are cats' and 'No cat is a dog'? I. No lion is a dog.
II. Some dogs are lions.

Competition practiceSyllogism
  • AOnly conclusion II follows
  • BOnly conclusion I follows
  • CBoth conclusions I and II follow
  • DNeither conclusion I nor II follows

Step-by-Step Solution

Every lion is a cat and no cat is a dog, so no lion is a dog (I). II contradicts I, so it does not follow.
Answer: B) Only conclusion I follows

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