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Statements: All dogs are mammals. All mammals are animals. Conclusions: I. All animals being dogs is a possibility.
II. All dogs are animals. Which conclusion follows?

Competition practiceSyllogism
  • AOnly II follows
  • BNeither follows
  • CBoth I and II follow
  • DOnly I follows

Step-by-Step Solution

Dogs ⊆ mammals ⊆ animals gives 'all dogs are animals' (II). If all three classes coincide, all statements still hold and every animal is a dog, so I is a valid possibility. Both follow.
Answer: C) Both I and II follow

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