GCAT Syllogistic Reasoning 2

Question 1

All doctors are scientists. Some scientists are professors. Which conclusion is valid?

Accepted Answer

No conclusion can be drawn about doctors and professors.

Answer

All doctors are professors.

Answer

Some doctors are professors.

Answer

Some scientists are doctors.

Question 2

No fish are mammals. All whales are mammals. Which conclusion follows?

Accepted Answer

No whales are fish.

Answer

Some whales are fish.

Answer

All mammals are whales.

Answer

Some fish are whales.

Question 3

All A are B. All B are C. No C are D. What can be concluded about A and D?

Accepted Answer

No A are D.

Answer

All A are D.

Answer

Some A are D.

Answer

No conclusion is possible.

Question 4

Some managers are leaders. All leaders are communicators. Which must be true?

Accepted Answer

Some managers are communicators.

Answer

All managers are communicators.

Answer

No managers are communicators.

Answer

All communicators are managers.

Question 5

All poets are dreamers. No dreamer is a banker. Which is valid?

Accepted Answer

No poet is a banker.

Answer

Some bankers are poets.

Answer

All bankers are dreamers.

Answer

Some poets are bankers.

Question 6

Some athletes are vegetarians. Some vegetarians are doctors. Which conclusion is valid?

Accepted Answer

No valid conclusion about athletes and doctors.

Answer

Some athletes are doctors.

Answer

All athletes are doctors.

Answer

No athletes are doctors.

Question 7

All red objects are heavy. This ball is not heavy. What follows?

Accepted Answer

This ball is not red.

Answer

This ball is red.

Answer

This ball might be red.

Answer

This ball is sometimes red.