GCAT Logical Deduction Problems 2

Question 1

All doctors are scientists. Some scientists are artists. Which conclusion must be true?

Accepted Answer

Some scientists are doctors

Answer

All doctors are artists

Answer

Some doctors are artists

Answer

No doctors are artists

Question 2

If it is not raining, Maria goes jogging. Maria did not go jogging today. What can you conclude?

Accepted Answer

It is raining today

Answer

Maria is sick

Answer

It might or might not be raining

Answer

Maria went swimming instead

Question 3

Five students — A, B, C, D, E — sit in a row. A is to the left of B. C is to the right of D. B is to the left of D. Who can be in the middle (3rd position)?

Accepted Answer

D

Answer

A

Answer

B

Answer

E

Question 4

No reptiles are warm-blooded. All snakes are reptiles. Which statement is definitely true?

Accepted Answer

No snakes are warm-blooded

Answer

Some snakes are warm-blooded

Answer

All warm-blooded animals are snakes

Answer

Some reptiles are snakes

Question 5

A store offers a discount only if a customer spends more than $100 OR uses a coupon. Tom received a discount but did not use a coupon. What must be true?

Accepted Answer

Tom spent more than $100

Answer

Tom spent exactly $100

Answer

Tom used a different coupon

Answer

Tom is a loyalty member

Question 6

All members of Club X play chess. No chess players ride motorcycles. James rides a motorcycle. Which conclusion follows?

Accepted Answer

James is not a member of Club X

Answer

James plays chess

Answer

James is a member of Club X

Answer

James is not a chess player only

Question 7

In a logic puzzle: P implies Q. Q implies R. R is false. What can you conclude about P?

Accepted Answer

P is false

Answer

P is true

Answer

P may be true or false

Answer

P implies R directly