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All mammals have lungs. Some animals with lungs are not mammals. Therefore, some

Practice Questions

Q1
All mammals have lungs. Some animals with lungs are not mammals. Therefore, some mammals are not animals with lungs. Is this conclusion valid?
  1. Yes
  2. No
  3. Only if all animals with lungs are mammals
  4. Only if some mammals do not have lungs

Questions & Step-by-Step Solutions

All mammals have lungs. Some animals with lungs are not mammals. Therefore, some mammals are not animals with lungs. Is this conclusion valid?
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