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No birds are mammals. Some mammals are not reptiles. Which conclusion is valid?

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Question: No birds are mammals. Some mammals are not reptiles. Which conclusion is valid?

Options:

  1. Some birds are reptiles.
  2. All mammals are birds.
  3. Some reptiles are not mammals.
  4. All reptiles are birds.

Correct Answer: Some reptiles are not mammals.

Solution: 

Since no birds are mammals and some mammals are not reptiles, it can be concluded that some reptiles are not mammals.

No birds are mammals. Some mammals are not reptiles. Which conclusion is valid?

Practice Questions

Q1
No birds are mammals. Some mammals are not reptiles. Which conclusion is valid?
  1. Some birds are reptiles.
  2. All mammals are birds.
  3. Some reptiles are not mammals.
  4. All reptiles are birds.

Questions & Step-by-Step Solutions

No birds are mammals. Some mammals are not reptiles. Which conclusion is valid?
  • Logical Deduction – The ability to draw conclusions based on given premises.
  • Categorical Logic – Understanding relationships between different categories (birds, mammals, reptiles).
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