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Worksheets

Logic Practice

Total questions: 41

Worksheet time: 28mins

Name
Class
Date
1.

A Circular form of reasoning in which a conclusion is derived from premises that presuppose the conclusion.

a)

Ad Hominem

b)

Begging the question

c)

Post hoc ergo propter hoc

d)

Bandwagon

e)

Cherry picking

2.

A fallacy that attacks the person rather than the issue.

a)

Ad Hominem

b)

Begging the question

c)

Post hoc ergo propter hoc

d)

Bandwagon

e)

Cherry picking

3.

A fallacy that wrongly assumes a cause and effect relationship.

a)

Ad Hominem

b)

Begging the question

c)

Post hoc ergo propter hoc

d)

Bandwagon

e)

Cherry picking

4.

A fallacy that creates the impression that everyone is doing it, so should you.

a)

Ad Hominem

b)

Begging the question

c)

Post hoc ergo propter hoc

d)

Bandwagon

e)

Cherry picking

5.

A false argument only reveals facts that seem to prove the thesis and leaves out facts that would disprove it.

a)

Ad Hominem

b)

Begging the question

c)

Post hoc ergo propter hoc

d)

Bandwagon

e)

Cherry picking

6.

Read the syllogism and state if it is Valid and True (VT) Valid and False (VF) Invalid but True (IT) or Invalid and False (IF): Mary is an elephant. Mary is pink. therefore, all elephants are Pink.

a)

VT

b)

IF

c)

VF

d)

IT

7.

P1: All humans have the ability to think;

P2: Alex is a human;

P3: Therefore, Alex can think.

a)

Valid

b)

invalid

8.

P1: Bob has never washed his car during winter;

P2: It is winter;

P3: Therefore, Bob doesn't wash his car.

a)

Valid

b)

Invalid

9.
Using the statements:
If it is Friday, then I will get paid.
It is Friday.
Write the conclusion.
a)
It is not Friday
b)
It is Friday
c)
I will not get paid
d)
I will get paid
10.

What can you conclude?

If it is below 32 degrees outside, then it is snowing. It is 28 degrees outside.

a)

It is a sunny day.

b)

It is raining.

c)

It is below 32 degrees.

d)

It is snowing.

11.

"A statement or proposition from which another is inferred or follows."

a)

Premise

b)

Conclusion

c)

Valid

d)

Sound

12.

"A proposition that is reached from given premises."

a)

Premise

b)

Conclusion

c)

Valid

d)

Sound

13.

A logical argument whose premises necessarily lead to the conclusion, regardless of whether or not the premises are correct.

a)

Premise

b)

Conclusion

c)

Valid

d)

Sound

14.

The philosophical idea that says that the simplest explanation is usually the right one.

a)

Ockham's Razor

b)

Syllogism

c)

Objective Truth

d)

Subjective Truth

15.

A tool for identifying the general Truths in an argument. Usually consists of 3 parts: A universal premise, a related particular premise and a conclusion that follows from the premises.

a)

Ockham's Razor

b)

Syllogism

c)

Objective Truth

d)

Subjective Truth

16.

A statement that is true for the speaker of a particular group of people, but may or not be true for all.

a)

Ockham's Razor

b)

Syllogism

c)

Objective Truth

d)

Subjective Truth

17.

A statement that is true regardless of the speaker.

a)

Ockham's Razor

b)

Syllogism

c)

Objective Truth

d)

Subjective Truth

18.

A conclusion about a subject which may or not be accurate based upon the knowledge or expertise of the person holding it.

a)

Preference

b)

Opinion

c)

Essence

d)

Accident

19.

A greater liking for one thing over another.

a)

Preference

b)

Opinion

c)

Essence

d)

Accident

20.

A quality without which a thing will cease to be what it is.

a)

Preference

b)

Opinion

c)

Essence

d)

Accident

21.

A quality without which a thing will remain what it is.

a)

Preference

b)

Opinion

c)

Essence

d)

Accident

22.

Read the syllogism and state if it is Valid and True (VT) Valid and False (VF) Invalid but True (IT) or Invalid and False (IF): It never rains on Monday. It is raining. It is not Monday

a)

VT

b)

IF

c)

VF

d)

IT

23.

Read the syllogism and state if it is Valid and True (VT) Valid and False (VF) Invalid but True (IT) or Invalid and False (IF): All members of the Class of 2025 rock. I am a member of the class of 2025, Therefore I rock.

a)

VT

b)

IF

c)

VF

d)

IT

24.

Read the syllogism and state if it is Valid and True (VT) Valid and False (VF) Invalid but True (IT) or Invalid and False (IF): My large cat is lazy. You have a large cat. Your cat is also lazy.

a)

VT

b)

IF

c)

VF

d)

IT

25.

Read the syllogism and state if it is Valid and True (VT) Valid and False (VF) Invalid but True (IT) or Invalid and False (IF): All elephants are pink. Mary is an elephant. Mary is pink.

a)

VT

b)

IF

c)

VF

d)

IT

26.

Read the syllogism and state if it is Valid and True (VT) Valid and False (VF) Invalid but True (IT) or Invalid and False (IF): All aliens live in Jupiter. I am an alien. I live in Jupiter.

a)

VT

b)

IF

c)

VF

d)

IT

27.

Fill in the missing premise of this syllogism based on what is given to you:

P1:_________________________

P2: This dog is a greyhound.

C: This dog is fast.

a)

Some dogs are fast.

b)

All greyhounds are fast.

c)

All greyhounds are thin

d)

All greyhounds are lazy

28.

Fill in the missing premise of this syllogism based on what is given to you:

P1: All babies cry

P2: _________________

C: Jasper cries

a)

Jasper is sad

b)

Jasper plays with his toys

c)

Jasper is a baby

d)

Jasper is sick

29.

Fill in the missing premise of this syllogism based on what is given to you:

P1: All fish are vertebrates

P2:________________________

C: Salmon are vertebrates

a)

Salmon are fish

b)

Salmon are large

c)

Salmon are delicious

d)

Salmon live in the ocean

30.

Read the sentence and choose which fallacy best describes what is being said:

"This is the right way to do it because I said so and I am in charge!"

a)

Appeal to Tradition

b)

Appeal to Ignorance

c)

Appeal to Authority

d)

Appeal to pity

31.

Read the sentence and choose which fallacy best describes what is being said:

"This is the right way to do it because this is the way it has always been done!"

a)

Appeal to Tradition

b)

Appeal to Ignorance

c)

Appeal to Authority

d)

Appeal to pity

32.

Read the sentence and choose which fallacy best describes what is being said:

"You can't prove that space cowboys didn't build Stonehenge, so my theory that they did is valid!"

a)

Appeal to Tradition

b)

Appeal to Ignorance

c)

Appeal to Authority

d)

Appeal to pity

33.

Read the sentence and choose which fallacy best describes what is being said:

"I deserve an A on this quiz because I tore my pants getting out of the car this morning and I am very sad about it."

a)

Appeal to Tradition

b)

Appeal to Ignorance

c)

Appeal to Authority

d)

Appeal to pity

34.

Read the sentence and choose which fallacy best describes what is being said:

"McDonald's is the best restaurant in the world because it has the most sales."

a)

Post hoc ergo propter hoc.

b)

Appeal to Popularity

c)

Strawman

d)

Tu Quoque

35.

Read the sentence and choose which fallacy best describes what is being said:

"My TV broke after you arrived so you caused it to break."

a)

Post hoc ergo propter hoc.

b)

Appeal to Popularity

c)

Strawman

d)

Tu Quoque

36.

Read the sentence and choose which fallacy best describes what is being said:

"You say I should eat a balanced diet, but I saw you eat a whole pizza once!"

a)

Post hoc ergo propter hoc.

b)

Appeal to Popularity

c)

Strawman

d)

Tu Quoque

37.

Read the sentence and choose which fallacy best describes what is being said:

"Mr. Pfefferle insists we get to school on time. He doesn't care about us getting enough sleep!"

a)

Post hoc ergo propter hoc.

b)

Appeal to Popularity

c)

Strawman

d)

Tu Quoque

38.

Grizzly bears can't be dangerous! They're too cute.

a)

ad hominem

b)

red herring

c)

strawman

39.

P1: All A is C;

P2: B is A;

P3: Therefore, B is C.

a)

True

b)

False

40.

P1: Every car has wheels and doors;

P2: X has wheels and doors;

P3: Therefore, X is a car.

a)

True

b)

False

41.
Draw a conclusion from the statement.
If you live in Orlando, then you live in Florida.
You live in Orlando.
a)
You live in Disney Land
b)
You are an old person.
c)
You live in Florida
d)
You live in Orlando