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In the following question, two statements are given followed by two conclusions. Take the statements to be true even if they seem at variance with commonly known facts. Statements: Some cats are dogs. No dog is a rat. Conclusions: I. Some cats are not rats.
II. No cat is a rat.

Competition practiceSyllogism
  • ANeither conclusion follows
  • BOnly conclusion I follows
  • COnly conclusion II follows
  • DBoth conclusions follow

Step-by-Step Solution

The cats that are dogs cannot be rats, so some cats are definitely not rats (I follows). But other cats might still be rats, so 'No cat is a rat' is not guaranteed (II does not follow).
Answer: B) Only conclusion I follows

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