Logic Exam 1 Quiz

1. If he goes home, then he will go to bed.

Statement of Belief

Conditional

Report

Piece of Advice

This is a conditional statement.

Explanation

This is a conditional statement.

2. All cats are mammals.All mammals are animals.Therefore, all cats are animals.

Valid - Sound

Valid - Unsound

Invalid - Sound

Invalid - Unsound

This is valid and the premises are all true.

Explanation

This is valid and the premises are all true.

3. People have been celebrating thanksgiving for hundreds of years. It is likely that they will continue to do so next year.

Strong - Cogent

Strong - Uncogent

Weak - Cogent

Weak - Uncogent

This is a strong argument with true premises.

Explanation

This is a strong argument with true premises.

4. He walks by my house every single day because I live on the way to where he works.

Argument

Explanation

Expository

Statement of Belief

This is an explanation. It is telling us why something happens (namely, the man walking past my house every day).

Explanation

This is an explanation. It is telling us why something happens (namely, the man walking past my house every day).

5. The entire human race will be wiped out by nuclear missiles in the next twenty years.

Conditional

Argument

Statement of Belief

Report

This is a statement of belief, for which no evidence is given.

Explanation

This is a statement of belief, for which no evidence is given.

6. Being a living creature is a ______________ condition for being a human being.

It is necessary that one be a living creature in order to be a human being.

Explanation

It is necessary that one be a living creature in order to be a human being.

Submit

7. 7 out or 50 people who were polled will vote republican. Therefore, most people will vote republican in the coming election.

Strong - Cogent

Strong - Uncogent

Weak - Cogent

Weak - Uncogent

7 out of 50 is not enough to make this argument a strong argument. Of course, this weakness also makes it automatically uncogent.

Explanation

7 out of 50 is not enough to make this argument a strong argument. Of course, this weakness also makes it automatically uncogent.

8. If I do this quiz, then I will learn the material. If I learn this material, then I will do well on the test. Therefore, if I do this quiz, then I will do well on the test.

Inductive prediction

Deductive disjunctive syllogism

Inductive Causal Inference

Deductive Hypothetical syllogism

If/then statements make up a hypothetical syllogism

Explanation

If/then statements make up a hypothetical syllogism

9. Students who go to college are more interesting people than those who do not go to college. They learn information which rounds them out as people. In addition, they have some area of specialty which gives them fascinating insights.

Argument

Statement of Belief

Illustration

Explanation

This is an argument. The conclusion is not generally agreed upon by everyone.

Explanation

This is an argument. The conclusion is not generally agreed upon by everyone.

10. Match the argument with its argument form.

If it rains, then the grass will be wet. It did not rain. Therefore, the grass will not be wet.

All cats are mammals. All cats are animals. Therefore, all mammals are animals.

Some men are husbands. Some men are masculine. Therefore all men are masculine fathers.

If it rains, then the grass will be wet. The grass is wet. Therefore, It rained.

Either she is a republican or a democrat. She is not a republican. She is not a democrat.

Submit

11. Being human is a ________________ condition for being a living creature.

Being human is enough to make one a living creature. One could also be other types of living creatures.

Explanation

Being human is enough to make one a living creature. One could also be other types of living creatures.

Submit

12. GPC insists that students meet a minimum requirement in their GPA in order to graduate. It is likely that all colleges insist upon the same thing.

Inductive analogy

Inductive Generalization

Inductive causal inference

Deductive Categorical Syllogism

Here we are reasoning from one college to all colleges.

Explanation

Here we are reasoning from one college to all colleges.

13. Mars is the fourth planet from the sun and the second smallest planet in the solar system. Named after the Roman God of War, it is often referred to as the "Red Planet" due to its reddish appearance from the iron oxide on its surface. Mars is a terrestrial planet with a thing atmosphere, having surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts, and polar ice caps of Earth.

Report

Illustration

Explanation

Expository

This is expository. It introduces a topic (Mars) and fills in details about it.

Explanation

This is expository. It introduces a topic (Mars) and fills in details about it.

14. All women were once young girls. Abe Lincoln is a woman. Therefore, Able Lincoln was once a young girl.

Valid - Sound

Valid - Unsound

Invalid - Sound

Invalid - Unsound

It is valid, but clearly the premises are not true.

Explanation

It is valid, but clearly the premises are not true.

15. GPC insists that students meet a minimum requirement in their GPA in order to graduate. It is likely that Georgia State University insists upon the same thing.

Deductive mathematical

Inductive analogy

Inductive generalization

Deductive Categorical Syllogism

Here we are comparing to similar objects and assuming that what is true of one is true of the other.

Explanation

Here we are comparing to similar objects and assuming that what is true of one is true of the other.

16. All men are mortal. Socrates is a man. Therefore, Socrates' son is also mortal.

Valid - Sound

Valid - Unsound

Invalid - Sound

Invalid - Unsound

This conclusion does not follow necessary from the premises. Of course, since it is invalid, it is automatically unsound.

Explanation

This conclusion does not follow necessary from the premises. Of course, since it is invalid, it is automatically unsound.