LSAT Logical Reasoning : Inference
Study concepts, example questions & explanations for LSAT Logical Reasoning
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Example Questions
Example Question #1 : Determining Which Answer Cannot Be True Based On The Information Given
Most dogs have four legs. Some animals with four legs make great companions. Some dogs are fluffy.
If the above statements are true, which of the following must be true?
Some great companions are fluffy.
If a dog has four legs then it will be a great companion.
Some animals with four legs are dogs.
Most animals with four legs make great companions.
Some dogs that are fluffy have four legs.
Some animals with four legs are dogs.
The correct answer comes from the stimulus alone. The correct answer is the only one that must be true.
Example Question #4 : Cannot Be True
Most four-legged, domesticated animals are dogs. All dogs are pets. No pets are allowed inside of the school building. All domesticated animals on school property must be leashed. All domesticated animals are pets.
Which of the following cannot be true?
A four-legged animal is not leashed on school property.
A four-legged, non-domesticated animal is allowed inside of the school property.
A domesticated animal that is not a dog is permitted inside the school building.
A domesticated animal that is not a dog is leashed on school property.
A dog is permitted near school property.
A domesticated animal that is not a dog is permitted inside the school building.
The difficult in this questions lies simply in the complicated structure of the passage and the confusing phrasing of the possible answers. In the end, however, the answer is quite simple. No domesticated animals (dogs or otherwise) are allowed inside the school building, because all domesticated animals are pets, and no pets are allowed inside.
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