← LSAT Inference & Assumption Flashcards

LSAT Law School Admission Test Sample Test

Try 5 free practice questions with instant feedback. See how ready you are.

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Sample Questions

Question 1

What is a 'necessary assumption' in LSAT logical reasoning?

Answer: A necessary assumption is a statement that MUST be true for the argument's conclusion to hold. Without it, the argument falls apart entirely.

Question 2

What is a 'sufficient assumption' in LSAT logical reasoning?

Answer: A sufficient assumption is a statement that, if true, guarantees the conclusion follows. It fills the logical gap completely, making the argument valid.

Question 3

What is the key difference between a necessary assumption and a sufficient assumption?

Answer: A necessary assumption must be true for the argument to work (its negation kills the argument), while a sufficient assumption guarantees the conclusion on its own if true.

Question 4

What does it mean for a statement to be a valid LSAT 'inference'?

Answer: A valid inference is a conclusion that must be true based solely on the information given in the stimulus. It cannot go beyond what the premises strictly support.

Question 5

On LSAT Must Be True questions, what standard must the correct answer meet?

Answer: The correct answer must be guaranteed true based on the stimulus alone—not merely likely, possible, or strongly suggested. If it could be false given the stimulus, it is wrong.