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Statements: All keys are locks. Some locks are metals. Conclusions: I. Some keys are metals.
II. Some keys are not metals. Which conclusion(s) follow?

Competition practiceSyllogism
  • AEither I or II follows
  • BOnly I follows
  • COnly II follows
  • DNeither I nor II follows

Step-by-Step Solution

The metal locks may or may not be keys, so neither 'some keys are metals' nor 'some keys are not metals' is certain individually. They form a complementary pair, so either I or II must hold.
Answer: A) Either I or II follows

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