GMA Logical Reasoning 1

Question 1

Which of the following logically completes the sequence?
2, 4, 8, 16, __?

Accepted Answer

32

Answer

The pattern is that each number is doubled.
2 × 2 = 4, 4 × 2 = 8, 8 × 2 = 16, so 16 × 2 = 32.

Question 2

If all roses are flowers and some flowers fade quickly, which of the following statements must be true?

Accepted Answer

Some flowers are not roses.

Answer

The statement "all roses are flowers" doesn't imply that all flowers are roses. Therefore, it must be true that some flowers are not roses.

Question 3

Which of the following is the best conclusion based on the statements?
1. All cars are vehicles.
2. Some cars are electric.

Accepted Answer

Some vehicles are electric.

Answer

Since all cars are vehicles and some cars are electric, it follows that some vehicles are electric.

Question 4

If the first two statements are true, is the final statement true?
1. All students passed the test.
2. Mary is a student.
3. Mary passed the test.

Accepted Answer

True

Answer

This is a classic example of deductive reasoning. The first statement establishes a universal truth: all members of the 'students' group passed the test. The second statement identifies Mary as a member of this 'students' group. Therefore, it logically and necessarily follows that Mary, being a student, must have passed the test.

Question 5

Which of the following statements is logically inconsistent with the others?
1. All dogs bark.
2. Some dogs are quiet.
3. Some dogs do not bark.
4. No dogs are quiet.

Accepted Answer

Statement 4

Answer

Statement 4, 'No dogs are quiet,' is logically inconsistent with Statement 2, 'Some dogs are quiet.' These two statements are direct contradictories; if one is true, the other must be false, and they cannot both be true simultaneously. While Statement 1 ('All dogs bark') and Statement 3 ('Some dogs do not bark') are also contradictory, the question asks for *the* inconsistent statement, and the contradiction between a universal negative (Statement 4) and a particular affirmative (Statement 2) is a fundamental logical inconsistency.

(GMA) General Mental Ability Practice Test

(GMA) General Mental Ability Practice Test

GMA Logical Reasoning 1