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Statements: Some keys are locks. All locks are metals. Conclusions: I. Some keys are metals.
II. All keys are metals. Which conclusion(s) follow?

Competition practiceSyllogism
  • ABoth conclusions follow
  • BOnly conclusion I follows
  • COnly conclusion II follows
  • DNeither conclusion follows

Step-by-Step Solution

The keys that are locks are metals, so some keys are metals (I follows). Keys that are not locks may be non-metals, so 'all keys are metals' is not certain (II does not follow).
Answer: B) Only conclusion I follows

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