LSAT Logical Reasoning Question Types

The LSAT Logical Reasoning section features 17 distinct question types. The top five types alone account for over 56% of all questions. Each guide below covers identification strategies, common patterns, and how to approach the question type on test day. Types are ordered by frequency.

High-Frequency Types

These five types make up the majority of LR questions. Master them first.

Flaw
14.8%
Identify the reasoning error in the argument. The single most common LR question type, appearing on every PrepTest.
Inference
14.7%
Draw a conclusion that is supported but not explicitly stated. Requires conservative extrapolation from the stimulus.
Necessary Assumption
11.0%
Identify the unstated assumption required for the argument to hold. Use the negation test to verify.
Weaken
8.9%
Find information that undermines the argument's conclusion by attacking the link between premises and conclusion.
Strengthen
7.3%
Find information that supports the argument's conclusion by reinforcing the connection between premises and conclusion.

Medium-Frequency Types

These types appear regularly and are worth dedicated study time.

Resolve the Discrepancy
7.0%
Explain an apparent contradiction between two facts presented in the stimulus.
Principle (Supporting)
4.9%
Identify a general rule or principle that justifies the argument's reasoning.
Sufficient Assumption
4.7%
Find the assumption that, if added, makes the argument logically valid (deductively certain).
Method of Reasoning
4.7%
Describe the argumentative technique used in the stimulus in abstract terms.
Identify the Conclusion
4.5%
Determine which statement in the stimulus is the main conclusion the author is arguing for.

Lower-Frequency Types

These types appear less often but can still appear on any given test.

Match the Flaw
3.8%
Find an argument in the answer choices that commits the same reasoning error as the stimulus.
Match the Reasoning
3.7%
Find an argument in the answer choices that uses the same logical structure as the stimulus.
Point of Disagreement
3.4%
Identify the specific claim on which two speakers in a dialogue disagree.
Identify the Role
3.3%
Determine the logical function a specific statement plays within the argument's structure.
Principle (Conform)
3.0%
Match a general principle to a specific situation, or find a situation that conforms to a stated principle.
Give an Example
0.4%
Provide a concrete example that illustrates an abstract principle described in the stimulus.
Except / Not / Least
0.1%
Identify the one answer choice that does NOT satisfy the question's criteria. Requires checking all five choices.