Medium LSAT Practice Questions With Answers Practice Questions

Seventy percent of test-takers report that logical reasoning represents the most challenging section of the Law School Admission Test. These Medium LSAT Practice Questions With Answers are designed to bridge the gap between basic logic and the high-level analytical skills required for a top-tier score. By engaging with these prompts, you will refine your ability to identify hidden assumptions, evaluate flawed arguments, and map out conditional logic structures. Success on the LSAT is not merely about intuition; it requires a systematic approach to the LSAT Prep process that emphasizes precision over speed.

Concept Explanation

Medium LSAT practice questions focus on intermediate logical structures, including formal conditional logic, flawed reasoning patterns, and complex reading comprehension inferences. Unlike easy questions that present straightforward premises, medium-level questions often introduce distracting information or nuanced language to obscure the relationship between the evidence and the conclusion. To master these, you must be proficient in identifying the "core" of an argument—the specific link between the premises and the final claim. This involves recognizing common logical fallacies such as correlation-to-causation errors, sampling biases, and necessary vs. sufficient condition confusion. According to the Law School Admission Council (LSAC), these skills are essential for the rigorous analytical reading required in legal education.

Solved Examples

Review these worked examples to understand the step-by-step logic required for medium-difficulty questions.

1. Logical Reasoning (Assumption): "Most city residents prefer public transit to driving. Therefore, the new highway project is a waste of taxpayer money."
   1. Identify the conclusion: The highway project is a waste of money.
   2. Identify the premise: Most residents prefer public transit.
   3. Find the gap: The argument assumes that if people prefer transit, they will not use or benefit from a new highway.
   4. Solution: The necessary assumption is that the preference for transit translates into a lack of need for highway infrastructure.
2. Analytical Reasoning (Logic Games): If A must be before B, and C must be before A, what is the possible order of D, C, A, and B?
   1. Map the conditions: $C \rightarrow A \rightarrow B$.
   2. Identify the "floater": D has no constraints.
   3. Test positions: D can be anywhere. Possible orders include D-C-A-B, C-D-A-B, C-A-D-B, or C-A-B-D.
   4. Solution: Any sequence where C precedes A and A precedes B is valid.
3. Logical Reasoning (Strengthen): "Studies show that students who eat breakfast perform better on exams. Thus, the school should provide free breakfast to raise test scores."
   1. Identify the causal claim: Eating breakfast causes higher scores.
   2. Identify the potential flaw: The relationship might be correlation, not causation (e.g., wealthier students eat breakfast and have tutors).
   3. Strengthen the argument: Provide evidence that eliminates alternative causes.
   4. Solution: A study showing that students' scores improved after they started eating breakfast, regardless of their socioeconomic status.

Practice Questions

Test your skills with the following Medium LSAT Practice Questions With Answers. Ensure you read every word carefully, as the LSAT often hinges on modifiers like "some," "most," or "only."

1. Many doctors recommend a low-sodium diet to reduce blood pressure. However, a recent study found that patients who strictly followed a low-sodium diet showed no significant decrease in blood pressure compared to those who did not. Therefore, sodium intake does not affect blood pressure. Which of the following, if true, most weakens the argument?
2. If the library stays open late, then Sarah will study there. If Sarah studies at the library, she will pass her ethics exam. Sarah did not pass her ethics exam. What must be true?
3. Every member of the hiking club is also a member of the environmental group. Some members of the environmental group are professional photographers. Which of the following must be true?

4. A company's profits increased by 20% this year. The CEO claimed this was due to the new marketing strategy. However, the entire industry saw a 25% increase in profits due to a global economic boom. The CEO's claim is most vulnerable to criticism on the grounds that it:
5. Five runners—P, Q, R, S, and T—are competing. P finishes ahead of Q. R finishes after S. T finishes before P but after R. Which of the following could be the finishing order from first to last?
6. No one who is a vegetarian eats steak. Some vegetarians eat fish. Therefore, some people who eat fish do not eat steak. Is this argument valid?
7. For a new law to be passed, it must receive a majority vote in both the House and the Senate. The proposed tax law received a majority in the House but failed to pass. Which of the following can be inferred?
8. Journalist: "The mayor's proposal to increase park funding is clearly a ploy to gain votes, as the mayor is running for re-election next month." The journalist's argument is flawed because it:
9. If a plant is a cactus, it requires very little water. This plant requires very little water. Therefore, it is a cactus. This reasoning is most similar to which of the following?
10. A survey of 1,000 residents in a coastal town found that 80% support building a new pier. The town council concluded that the majority of the state's citizens support the pier. The council's conclusion is flawed because:

Answers & Explanations

1. Answer: The study only included patients who were already on blood pressure medication. Explanation: If the patients were already on medication, the effects of the diet might have been masked or rendered redundant, weakening the claim that sodium has no effect at all.
2. Answer: The library did not stay open late. Explanation: Using the contrapositive of the conditional chain: $\text{Late} \rightarrow \text{Sarah} \rightarrow \text{Pass}$. If $eg \text{Pass}$, then $eg \text{Sarah}$. If $eg \text{Sarah}$, then $eg \text{Late}$.
3. Answer: None of the above necessarily follow. Explanation: While all hikers are in the group, the photographers in the group might not be hikers. There is no guaranteed overlap between hikers and photographers.
4. Answer: Fails to consider that the profit increase could be attributed to external factors affecting the whole industry. Explanation: The CEO ignores the "rising tide" effect of the global economic boom, which likely caused the increase rather than the specific marketing strategy.
5. Answer: S-R-T-P-Q. Explanation: The constraints are $S > R$, $R > T > P$, and $P > Q$. Combining these gives the string $S > R > T > P > Q$.
6. Answer: Yes, the argument is valid. Explanation: If some fish-eaters are vegetarians, and no vegetarians eat steak, then those specific fish-eating vegetarians definitely do not eat steak.
7. Answer: The law did not receive a majority vote in the Senate. Explanation: Since passing requires both House and Senate approval, and it passed the House but still failed, it must have failed the Senate.
8. Answer: Attacks the motive of the person making the proposal rather than the merits of the proposal itself. Explanation: This is a classic ad hominem fallacy (circumstantial), focusing on the mayor's re-election rather than the utility of park funding.
9. Answer: If it is raining, the streets are wet. The streets are wet, so it is raining. Explanation: This is the fallacy of affirming the consequent: $A \rightarrow B$, $B$, therefore $A$.
10. Answer: The sample is not representative of the entire state. Explanation: Coastal residents are much more likely to care about a pier than inland residents, making the survey biased for a statewide conclusion.

Frequently Asked Questions

What makes an LSAT question "medium" difficulty?

Medium questions typically involve multi-step conditional logic or arguments where the conclusion is slightly detached from the premises. They require more than just identifying a pattern, often forcing the test-taker to eliminate very attractive "distractor" answers that are only partially correct.

How can I improve my speed on logical reasoning?

Improving speed requires internalizing common argument structures so you can identify them instantly. You might use an AI Question Generator to drill specific question types like "Flaw" or "Strengthen" until the logic becomes second nature.

Are these questions similar to those on the GRE?

While both exams test logic, the LSAT is generally considered more rigorous in its formal logic requirements. However, students preparing for other exams might find a Hard GRE Reading Practice helpful for developing similar analytical stamina.

How should I handle "Except" questions?

For "Except" questions, four answers will perform a specific function (like weakening the argument), and one will not. The correct answer is the one that is either neutral or does the opposite of the other four, so it is often helpful to cross off the four that clearly fit the criteria.

Is formal logic like $A \rightarrow B$ really necessary for the LSAT?

Yes, diagramming is a vital tool for medium and hard questions, especially in the Analytical Reasoning section. Mapping out "if-then" statements prevents mental fatigue and reduces the likelihood of making simple reversal errors during the exam.