Practice Quiz

LSAT

Category - Logical Reasoning

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All humans are mammals, and all mammals are animals. All animals are living organisms. Some organisms reproduce asexually, but not mammals. Some mammals live underwater, but not humans.

If the sentence “At least some animals reproduce asexually and live underwater” is added to the passage, each of the following must be true EXCEPT:
  1. At least one underwater animal is a mammal.
  2. At least one underwater animal reproduces asexually.
  3. Some living organisms are mammals, but not all.
  4. Some living organisms do not live underwater.
  5. Most asexually reproducing animals do not live underwater.
Explanation
Answer: E - All of the answers must be true except that most asexually reproducing animals do not live underwater. While at least some asexually reproducing animals live underwater, it is not certain that most do, making E the correct answer.
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