gmat 经典的20道逻辑题

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gmat 经典的20道逻辑题

1. Fiona went to the store to buy either apples or

oranges. If she bought apples, then she also bought pears.

Fiona did not buy pears. What did she buy?

- Answer: Oranges

2. All dogs are animals. Max is a dog. Therefore, Max is

an animal. This is an example of:

- Answer: Deductive reasoning

3. If it is raining, then the ground is wet. The ground

is wet. Therefore, it must be raining. This is an example of:

- Answer: Deductive reasoning

4. All birds have wings. Penguins do not have wings.

Therefore, penguins are not birds. This is an example of:

- Answer: Deductive reasoning

5. Some cats are black. Whiskers is a cat. Therefore,

Whiskers must be black. This is an example of:

- Answer: Inductive reasoning

6. All swans are white. John saw a swan that was black.

Therefore, not all swans are white. This is an example of:

- Answer: Counterexample

7. If it snows, then the roads are slippery. The roads

are not slippery. Therefore, it did not snow. This is an

example of:

- Answer: Deductive reasoning

8. All roses are flowers. The red thing in front of me

is a rose. Therefore, the red thing in front of me is a

flower. This is an example of:

- Answer: Deductive reasoning 9. All of the players on the basketball team are tall.

John is a player on the basketball team. Therefore, John must

be tall. This is an example of:

- Answer: Deductive reasoning

10. If I eat too much chocolate, then I will get a

stomachache. I ate a lot of chocolate. Therefore, I will get

a stomachache. This is an example of:

- Answer: Deductive reasoning

11. If I study hard, then I will do well on the test. I

did not do well on the test. Therefore, I did not study hard.

This is an example of:

- Answer: Deductive reasoning

12. If a car is red, then it is expensive. The car is

red. Therefore, the car is expensive. This is an example of:

- Answer: Deductive reasoning

13. All cats are mammals. Whiskers is a mammal.

Therefore, Whiskers must be a cat. This is an example of:

- Answer: Deductive reasoning

14. If I eat breakfast, then I will have energy

throughout the day. I ate breakfast. Therefore, I will have

energy throughout the day. This is an example of:

- Answer: Deductive reasoning

15. All students in the math club are good at math.

Sarah is good at math. Therefore, Sarah must be a student in

the math club. This is an example of:

- Answer: Deductive reasoning

16. If I exercise regularly, then I will be healthy. I

exercise regularly. Therefore, I am healthy. This is an

example of:

- Answer: Deductive reasoning

17. All squares are rectangles. All rectangles have four sides. Therefore, all squares have four sides. This is an

example of:

- Answer: Deductive reasoning

18. If it is summer, then it is hot. It is hot.

Therefore, it must be summer. This is an example of:

- Answer: Deductive reasoning

19. All cats have four legs. Whiskers is a cat.

Therefore, Whiskers must have four legs. This is an example

of:

- Answer: Deductive reasoning

20. If it is windy, then the trees will sway. The trees

are not swaying. Therefore, it is not windy. This is an

example of:

- Answer: Deductive reasoning