Cannot Be True

Practice Questions

LSAT Logical Reasoning › Cannot Be True

Questions
6
1

The price of a barrel of crude oil fell by 15 percent over the last month. Economists point to several causes, including the discovery of new reserves of oil, the increased accessibility of alternative sources of fuel, the growth of mass transit, the decline of car sales, and the increase in non-fuel-consuming means of transportation, such as bicycles, over the same time frame.

Which of the following does the above argument NOT imply?

2

Many home renters buy their first homes believing that it is clearly more profitable to make mortgage payments than to pay rent. Other costs, such as maintenance, property taxes, and insurance must be factored in, however. All housing expenses together total at least 40% of most homeowners' income. It is not financially reasonable to spend any more than 30% of income on housing expenses.

If the information is correct, which of the following cannot be true?

3

Two things are true of all good deeds. First, they are accompanied by feelings of satisfaction. Second, if they are publicly known, they elicit general approval.

If all of the above statements are true, then which of the following cannot also be true?

4

Fewer people go without email with each passing year. Not only are younger and younger children signing up for their own accounts, but the generation that was largely too old and out of touch to have ever had an account is slowly dying. It is entirely likely that no one over the age of 10 will be without an email account within the next ten years.

Which of the following statements cannot be true based on the above statement?

5

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?

6

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?

Return to subject