LSAT Logical Reasoning : LSAT Logical Reasoning
Study concepts, example questions & explanations for LSAT Logical Reasoning
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Example Questions
Example Question #31 : Lsat Logical Reasoning
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.
Some dogs that are fluffy have four legs.
Most animals with four legs make great companions.
If a dog has four legs then it will be a great companion.
Some animals with four legs are dogs.
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 #31 : Lsat Logical Reasoning
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 dog is permitted near school property.
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 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.
Example Question #1 : Determining Which Answer Most Strengthens The Argument
It is immoral for a government to enter a war unless its own citizens have been attacked. To avoid taking immoral action, governments should receive international approval before entering a war in another country, no matter the cost.
Which of the following, if true, provides the most support for the argument?
Some governments have caused international turmoil by entering wars without international approval
There is usually international approval for a government that goes to war after its citizens are attacked
Governments often save lives by entering wars in other countries
Governments increase casualties by joining wars in other countries
A government will not receive international approval to join a war when its citizens have not been attacked
A government will not receive international approval to join a war when its citizens have not been attacked
An apparent weakness of the argument is that a government might receive international approval for going to war even when its citizens have not been attacked. If a government could never receive international approval for such a war, then this would no longer be a weakness.
Example Question #32 : Lsat Logical Reasoning
When car manufacturers place a high priority on generating large profits, they neglect their responsibility to make safe cars. Those manufacturers with the highest profits also make the most unsafe cars. Car manufacturers should be less concerned with generating large profits in order to improve car safety.
Which of the following, if true, most strengthens the argument?
All car manufacturers expend approximately the same resources on car safety
When car manufacturers reduce their priority on generating large profits, their profits actually increase
The car manufacturers with the highest profits also place a high priority on generating large profits
Car manufacturers that make the safest cars also give large amounts of money to charities
Car safety can be improved with little effort on the part of car manufacturers
The car manufacturers with the highest profits also place a high priority on generating large profits
The argument states that manufacturers with the highest profits also make the most unsafe cars. This is only supporting evidence, however, if manufacturers with the highest profits also place the highest priority on profits.
Example Question #3 : Determining Which Answer Most Strengthens The Argument
Common perceptions aside, people are safer from crime in urban areas than in rural areas. The reason for this is that there are more people available to prevent crimes in urban areas and police can respond more quickly than in rural areas. For instance, a person who yells for help after being robbed is more likely to be heard in an urban area. It is also likely that a police officer will arrive more quickly because there are more of them in urban areas.
Which of the following, if true, most strengthens the argument?
Crimes in rural areas tend to be less dangerous than in urban areas, although the overall number of crimes is comparable
Crime rates are similar in both urban and rural areas
People in urban areas are less likely to respond to a yell for help than in rural areas
A higher percentage of crimes take place on the streets in urban areas than in rural areas
On average, police respond to urban crime scenes twice as fast as rural crime scenes
On average, police respond to urban crime scenes twice as fast as rural crime scenes
The fact that police officers respond more quickly in urban areas than in rural areas directly supports a central premise of the argument and, ultimately, the conclusion. Several of the incorrect answers appear to provide some support for the ultimate conclusion, but they do not provide support for the particular reasoning of the argument.
Example Question #4 : Determining Which Answer Most Strengthens The Argument
The Democratic Party, despite being more popular than the Republicans in a recent national poll, will not retake the House of Representatives this upcoming election. This poll does not account for the fact that most incumbent Republicans poll much higher than the rest of their party, the Democratic Party does not have eligible candidates to challenge most seats, nor that recent changes in election laws give the better-funded Republican Party the opportunity to flood television with attack advertisements.
Which of the following, if true, most strengthens the argument made in the passage above?
Incumbents cannot fundraise as effectively when their party’s national reputation is under attack.
Attack advertisements do not disgust voters and therefore make them more likely to vote against the party that aired them.
Many members of the Republican Party Caucus in the House of Representatives voted to cut social security benefits.
The election is over twelve months away.
National polls tend to understate the Democratic Party's advantages.
Attack advertisements do not disgust voters and therefore make them more likely to vote against the party that aired them.
This answer defends the conclusion from the argument that the attack advertisements the Republicans will use will push voters away. The other four answers either contain irrelevant information or evidence that actually harms the conclusion.
Example Question #5 : Determining Which Answer Most Strengthens The Argument
Scholar: Journalists tend to be low-paid workers struggling to meet deadlines. Their editors tend to care less about the accuracy of the story and more about whether the story will sell. It follows that readers should be skeptical of the accuracy of most newspaper articles they read.
Each of the following helps strengthen the argument in the passage above EXCEPT:
Pressure from editors affects the way journalists produce their articles.
Lower paid professions tend to attract less qualified people who do not have the necessary background to effectively research a complex issue.
Articles that are most popular with readers tend to be sensationalist and lack accuracy.
Time pressure incentivizes journalists to cut corners and exclude certain facts they could not research in time.
Many readers feel like they are not being given the whole story when they read newspaper articles.
Many readers feel like they are not being given the whole story when they read newspaper articles.
The correct answer does nothing to strengthen the argument presented in the stimulus. The fact that readers do not feel they are getting the whole story does not mean that readers should not trust the newspaper articles they read. This answer only speaks to how readers feel, not the objective reality of whether the newspaper articles are accurate.
Example Question #6 : Determining Which Answer Most Strengthens The Argument
Even though Cindy tends to not lie, she decided that she would tell her friend Marvin that his performance went well, even though it had not, to cheer him up.
Which one of the following principles justifies Cindy’s behavior?
Telling a lie to a friend is never morally justified.
Telling a lie can only be morally justified if it is to a friend and for the purpose of preventing them from being harmed.
Telling a lie is never morally justified.
Telling a lie to a friend is morally justified under some circumstances as long as you eventually tell them the truth.
Telling a lie, as long as it is to a friend and for the purpose of cheering him or her up, is morally justified.
Telling a lie, as long as it is to a friend and for the purpose of cheering him or her up, is morally justified.
Only the correct answer is a principle that justifies the stimulus. The rest of the answers do not line up with the stimulus.
Example Question #33 : Lsat Logical Reasoning
Professional football teams should more often select new players from colleges with uncompetitive football teams. Most professional teams target players from competitive college teams, leaving few competitors for teams who select from less competitive colleges. Those who take a different view incorrectly believe that there are few talented players at uncompetitive colleges. The reality is that even very uncompetitive teams may have exceptionally talented individual players.
Which of the following, if true, most strengthens the argument?
Professional teams compete with each other to select players from competitive college teams but not from uncompetitive teams
Though there are more often talented players on competitive college teams, they are also on uncompetitive teams
Most professional football teams evaluate the talent of players on both competitive and uncompetitive college teams
Some uncompetitive college teams become competitive teams
An increasing number of professional teams select players from uncompetitive college teams
Professional teams compete with each other to select players from competitive college teams but not from uncompetitive teams
The argument claims that professional teams should select players from uncompetitive college teams but only asserts one advantage to doing so: less competition from other professional teams. The argument is thus strengthened if professional teams are less likely to compete for players from uncompetitive teams.
Example Question #38 : Lsat Logical Reasoning
In Southern California, a small newspaper company has doubled its sales of newspapers this quarter, compared to the previous quarter. However, it is bringing in significantly less revenue.
Which of the following, if true, offers the best explanation for the situation described above?
The newspaper company has lowered the prices of the paper in order sell more; however, the increase in sales does not offset the lower price point.
Although newspaper sales increased, there were reports of low customer satisfaction.
The increased sales were not enough to help the company to generate more revenue.
Key members of the executive leadership quit from the company.
Given the accessibility that the general public has to newspapers online, the need for physical newspapers has diminished.
The newspaper company has lowered the prices of the paper in order sell more; however, the increase in sales does not offset the lower price point.
The correct answer is:
The newspaper company has lowered the prices of the paper in order sell more; however, the increase in sales does not offset the lower price point.
This is because lowering the price of a product will only increase revenue if a sufficient amount of the product is sold. If the newspaper company did not sell enough of its product, then it follows that revenue would decrease.
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