100+ Free LSAT Logical Reasoning Practice Questions

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Architect: Buildings designed with natural light as a primary consideration have lower energy consumption than buildings designed primarily for maximum floor space. The Hillcrest Office Tower was designed primarily for maximum floor space. Therefore, the Hillcrest Office Tower has higher energy consumption than buildings designed with natural light as the primary consideration. The conclusion is properly drawn if which of the following is assumed?

The Hillcrest Office Tower was not subsequently retrofitted with energy-efficient lighting systems

The comparison holds only for office buildings of similar size

All buildings designed for maximum floor space have identical energy profiles

Natural light reduces the need for artificial lighting, which is the primary source of energy consumption in office buildings

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2026 Statistics

Key Facts: LSAT Logical Reasoning Exam

Two scored LR sections

Per LSAT administration since August 2024

LSAC (lsac.org)

~66.7% of LSAT score

Portion of the 120–180 scale determined by Logical Reasoning

LSAC format overview

~24–26 questions per section

Typical LR section length, 35 minutes each

LSAC official test format

14+ question types

Distinct LR question types tested across Assumption, Flaw, Strengthen, Weaken, Inference, and more

7Sage / LSAT prep research

Logic Games retired August 2024

Analytical Reasoning permanently removed and replaced by second LR section

LSAC announcement 2024

The LSAT Logical Reasoning section has been part of the exam for 50 years and is administered by LSAC. Starting with the August 2024 LSAT, the exam includes two scored Logical Reasoning sections of approximately 26 questions each, replacing the Analytical Reasoning (Logic Games) section that was retired. Each LR section is 35 minutes, making total LR time approximately 70 minutes per exam. The two LR sections account for roughly 66.7% of the 120–180 LSAT scaled score. The exam also includes one scored Reading Comprehension section and one unscored experimental LR or RC section.

Sample LSAT Logical Reasoning Practice Questions

Try these sample questions to test your LSAT Logical Reasoning exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1All mammals are warm-blooded. All warm-blooded creatures have a four-chambered heart. Therefore, all mammals have a four-chambered heart. The argument above is best described as:

A.Valid deductive reasoning in which the conclusion necessarily follows from the premises

B.An argument that commits the fallacy of affirming the consequent

C.An inductive generalization from a small sample

D.An argument that assumes its conclusion as a premise

Explanation: This is a classic valid syllogism: if all A are B, and all B are C, then all A are C. The conclusion necessarily follows from the premises, making this valid deductive reasoning. No fallacy is present because the logical form is correct.

2Spokesperson: Our city has seen a 30% drop in violent crime over the past decade. Clearly, our new community policing initiative, launched ten years ago, is responsible for making our streets safer. Which one of the following, if true, most weakens the argument?

A.The community policing initiative received strong support from local residents when it was introduced

B.Violent crime rates dropped by similar percentages in neighboring cities that did not adopt community policing during the same period

C.The city's police budget increased significantly when the community policing initiative was launched

D.Some individual neighborhoods in the city experienced increases in property crime over the same period

Explanation: The spokesperson infers that community policing caused the crime drop. If neighboring cities without the initiative saw the same decline, that strongly suggests an alternative cause (such as national trends) is responsible, undermining the causal claim.

3Every student who studied for more than 20 hours passed the bar exam. Maria studied for exactly 22 hours. Therefore, Maria passed the bar exam. The conclusion above follows logically if which one of the following is assumed?

A.No student who studied fewer than 20 hours passed the bar exam

B.Maria studied for more than 20 hours

C.All students who passed the bar exam studied for more than 20 hours

D.Maria is a typical student

Explanation: The premise says students who studied more than 20 hours passed. The conclusion says Maria passed. To bridge the gap we need to confirm Maria is in the group who studied more than 20 hours. Studying exactly 22 hours means she studied more than 20 hours, so the assumption is merely confirming that 22 > 20, which is already true — but the logical gap only closes when we accept that 22 hours counts as 'more than 20 hours.' Answer (B) directly confirms Maria belongs to the triggering category.

4Nutritionist: Studies show that people who eat breakfast daily have lower rates of obesity than those who skip breakfast. Therefore, eating breakfast daily prevents obesity. The reasoning in the nutritionist's argument is flawed because the argument:

A.Relies on a sample that is too small to support a general conclusion

B.Confuses a correlation between two variables with a causal relationship

C.Ignores the possibility that obesity has multiple causes

D.Assumes that all people who eat breakfast daily will avoid obesity

Explanation: The argument moves directly from a statistical association (lower obesity rates among breakfast eaters) to a causal claim (breakfast prevents obesity). This ignores the possibility that the causal arrow runs the other way, or that a third variable explains both. Correlation does not establish causation.

5A city council is debating whether to build a new sports arena. Proponent: The arena will bring economic benefits to downtown. Opponent: The arena will increase traffic congestion. Which one of the following most accurately describes the relationship between the proponent's and opponent's statements?

A.The opponent's statement directly contradicts the proponent's statement

B.The statements can both be true simultaneously

C.The opponent's statement is logically entailed by the proponent's statement

D.The proponent's statement is an unstated assumption in the opponent's argument

Explanation: The proponent claims economic benefits; the opponent claims traffic congestion. These address different aspects of the arena's impact and are not mutually exclusive. The arena could produce economic benefits and increased traffic at the same time, so both statements can be simultaneously true.

6Historian: Every major empire in antiquity eventually collapsed. The Roman Empire, the Han Dynasty, and the Persian Empire all rose to great power and then fell. Therefore, no empire can sustain itself indefinitely. Which one of the following is the main conclusion of the historian's argument?

A.The Roman Empire, the Han Dynasty, and the Persian Empire all collapsed

B.No empire can sustain itself indefinitely

C.Every major empire in antiquity eventually collapsed

D.Empires that rise to great power are more likely to fall

Explanation: The main conclusion is the claim the historian is ultimately trying to establish. The statement 'no empire can sustain itself indefinitely' is supported by the historical examples and the general claim about ancient empires — it is what those premises are meant to prove.

7The city installed new LED streetlights last year and energy costs fell by 25% this year. The mayor announced that the LED streetlights are responsible for the savings. Which one of the following, if true, most strengthens the mayor's claim?

A.LED streetlights have a longer lifespan than traditional bulbs

B.Energy prices dropped by 25% nationally over the same period

C.An independent audit confirmed that the streetlights account for 90% of the city's outdoor lighting energy use and no other major changes in usage occurred

D.The mayor has a long record of supporting energy-efficient initiatives

Explanation: The mayor's claim is that LEDs caused the savings. An independent audit establishing that streetlights account for the vast majority of outdoor energy use and that no other changes occurred eliminates alternative explanations and directly supports the causal claim.

8Whenever it rains, the streets flood. The streets are flooded. Therefore, it must be raining. The flawed reasoning above most closely parallels which one of the following?

A.Whenever Maria exercises, she feels energetic. Maria feels energetic. Therefore, Maria must have exercised.

B.Whenever Maria exercises, she feels energetic. Maria exercised today. Therefore, Maria feels energetic today.

C.Maria either exercises or feels tired. Maria does not feel tired. Therefore, Maria exercised.

D.Maria exercises only if she feels energetic. Maria does not feel energetic. Therefore, Maria did not exercise.

Explanation: The original argument commits the fallacy of affirming the consequent: 'If P then Q; Q; therefore P.' Option A has the same structure: 'If exercises, then energetic; energetic; therefore exercised.' Both are formally invalid for the same reason.

9A new medication was approved after clinical trials showed it reduced symptoms in 70% of patients. However, the medication has now been linked to rare but serious side effects. The pharmaceutical company argues that the drug should remain on the market because the benefits outweigh the risks for most patients. The pharmaceutical company's argument most strongly relies on which one of the following assumptions?

A.No alternative medication exists that achieves a 70% symptom reduction

B.Patients who experience side effects represent a small enough proportion that the aggregate benefit across all patients still exceeds the aggregate harm

C.The clinical trials were conducted under strict regulatory oversight

D.The side effects can be effectively managed with additional treatment

Explanation: The company claims benefits outweigh risks 'for most patients.' For this overall cost-benefit calculus to hold, it must be true that the harm to the minority who suffer side effects does not cancel out the benefit to the majority — i.e., in aggregate, benefit exceeds harm. This is the necessary assumption bridging the claim.

10Economists report that the unemployment rate has fallen steadily for three consecutive years. Meanwhile, consumer confidence surveys show record lows. Which one of the following, if true, most helps to resolve the apparent paradox?

A.Consumer confidence surveys have been conducted for decades and are considered reliable

B.Falling unemployment typically leads to rising consumer confidence under normal economic conditions

C.Most new jobs created during this period are part-time or gig-economy positions that do not provide stable income or benefits

D.The government revised its methodology for calculating unemployment two years ago

Explanation: The paradox is: unemployment is falling (seemingly good) yet confidence is at record lows (seemingly bad). If new jobs are mostly part-time with no benefits, workers may technically be 'employed' but remain financially insecure, explaining why confidence stays low despite lower unemployment numbers.

About the LSAT Logical Reasoning Exam

The LSAT Logical Reasoning section presents 24–26 short arguments drawn from everyday sources — news articles, academic journals, conversations, and advertisements. Test-takers must analyze, critique, and extend these arguments across 14+ question types including Assumption, Flaw, Strengthen, Weaken, Inference, Principle, Parallel Reasoning, Method of Reasoning, and Paradox. Since August 2024, the LSAT includes two scored LR sections, making Logical Reasoning approximately 66.7% of the total scaled score.

Questions

26 scored questions

Time Limit

35 minutes per section (two scored sections per exam)

Passing Score

Part of the 120–180 LSAT scaled score; no standalone passing score for this section

Exam Fee

~$200 per LSAT administration (Law School Admission Council (LSAC))

LSAT Logical Reasoning Exam Content Outline

~16%

Assumption Questions

Necessary Assumption: find what the argument requires to hold. Sufficient Assumption: find what, if true, guarantees the conclusion.

~15%

Flaw in the Reasoning

Identify the logical error — correlation vs. causation, hasty generalization, affirming the consequent, equivocation, and more.

~20%

Strengthen and Weaken

Strengthen: find what most supports the conclusion. Weaken: find what most undermines it. Both require understanding the argument's gap.

~10%

Inference / Must Be True / Most Strongly Supported

Draw conclusions that must follow or are most strongly supported from the stimulus, treating all information as true.

~10%

Method of Reasoning

Describe how the argument proceeds — what logical moves it makes from premises to conclusion.

~8%

Parallel Reasoning and Parallel Flaw

Find the answer that mirrors the same valid structure or the same logical error as the original argument.

~21%

Principle, Main Conclusion, Role of Statement, Point at Issue, Paradox

Remaining question types: applying or identifying principles, finding main conclusions, determining a statement's role, finding points of disagreement, and resolving apparent paradoxes.

How to Pass the LSAT Logical Reasoning Exam

What You Need to Know

Passing score: Part of the 120–180 LSAT scaled score; no standalone passing score for this section
Exam length: 26 questions
Time limit: 35 minutes per section (two scored sections per exam)
Exam fee: ~$200 per LSAT administration

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

LSAT Logical Reasoning Study Tips from Top Performers

1Master the argument map before attempting answer choices: label every sentence in the stimulus as premise, conclusion, or background before reading options.

2For Flaw and Weaken questions, always ask 'What assumption is the argument making?' — the correct weakener attacks that assumption.

3Use the negation test for Necessary Assumption questions: negate each answer choice and see which one destroys the argument. That is the required assumption.

4For Parallel Reasoning questions, abstract the argument to its pure logical form (e.g., 'All A are B; X is A; therefore X is B') before looking at the options.

5Time management: each LR section has 26 questions in 35 minutes — approximately 1 minute 20 seconds per question. Mark and skip time-consuming Parallel Reasoning questions and return to them.

Frequently Asked Questions

How many Logical Reasoning sections are on the current LSAT?

Starting with the August 2024 LSAT, there are two scored Logical Reasoning sections, each with approximately 24–26 questions and a 35-minute time limit. The Analytical Reasoning (Logic Games) section was permanently removed and replaced with the second LR section.

What percentage of the LSAT score is Logical Reasoning?

With two scored LR sections and one scored Reading Comprehension section, LR accounts for approximately 66.7% of the LSAT scaled score. There is also one unscored experimental section of either LR or RC.

What are the most common LSAT Logical Reasoning question types?

The three most frequently tested types are Flaw in the Reasoning (~6–10 per exam), Strengthen/Weaken (~5–11 per exam), and Assumption/Necessary Assumption (~4–8 per exam). Method of Reasoning, Inference, Principle, and Parallel Reasoning are also consistently present.

Do I need formal logic training to score well on LSAT Logical Reasoning?

No specialized logic terminology is required. LSAC explicitly states you do not need terms like 'ad hominem' or 'syllogism.' However, you must deeply understand argument structure — premises, assumptions, and conclusions — and be able to evaluate reasoning precisely.

How should I approach LSAT Logical Reasoning questions?

LSAC's suggested approach: read the question stem first, then the stimulus. Identify the conclusion and premises. Pre-phrase an answer based on the question type before evaluating answer choices. Use process of elimination — wrong answers almost always make a logical error you can name.

What changed about LSAT Logical Reasoning in 2024?

In August 2024, LSAC permanently added a second scored Logical Reasoning section, replacing the Logic Games (Analytical Reasoning) section. The LR question types themselves remained the same; the change was structural, not content-based.