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Laws of logic

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Which law of logic is this:

If I buy a dress, then I won't get chips.

I bought a dress.

Therefore, I won't get chips.

a)

Transitive Law of Logic (Syllogism)

b)

Law of Noncontradiction

c)

Law of Identity

d)

Law of Excluded Middle

2.

Which law of logic would this statement be?


A soccer ball is a soccer ball and not a kitchen stove

a)

Law of the Excluded Middle

b)

Law of Non Contradiction

c)

Law of Identity

d)

What??

3.

Which law of logic does this statement break?


Today is both Monday and Tuesday

a)

Law of non-contradiction

b)

Law of identity

c)

Law of the excluded middle

d)

Principle of Sufficient Reason

4.

What law of logic does this statement break?


I kind of completed my reflection and kind of did not complete my reflection.

a)

Law of the Excluded Middle

b)

Law of Identity

c)

Law of Syllogism (transitive)

d)

Law of Non-contradiction

5.

Using the Transitive Law of Logic (Syllogism), draw a conclusion based on the statements given:

If a plane flies to China, then it will be a long flight. Sarah bought a ticket to China.

a)

Sarah will get stuck in the security line.

b)

Sarah will have a long flight.

c)

Sarah will need to bring a neck pillow and headphones.

d)

Sarah will get stuck with a middle seat on the plane.

6.

Which law of logic does this statement prove?


It is either true there is a stapler in the desk or it is not true.

a)

Law of Identity

b)

Law of Syllogism (transitive)

c)

Law of non-contradiction

d)

Law of the Excluded Middle

7.

Which law of logic does this statement break?


My car is blue but not blue at the same time.

a)

Law of the excluded middle

b)

Law of non-contradiction

c)

Law of Syllogism (transitive)

d)

Ockham's Razor (the simplest explanation tends to be the correct one.)

8.

Which law of logic does this statement prove?


Coffee is coffee and not tea.

a)

Law of Identity

b)

Law of Syllogism (transitive)

c)

Law of excluded middle

d)

Personally, I don't drink either

9.

Law of Identity

a)

reasoning with probabilty from examples or experience to general rules

b)

deals with the proper modes of reasoning

c)

A statement cannot be both true and false

d)

If a statement is true, then it is true

10.

Which law of logic does this statement illustrate?


The basketball game may or may not take place tomorrow.

a)

Law of Identity

b)

Law of Syllogism (transitive)

c)

Law of non-contradiction

d)

Law of the Excluded Middle

11.

What does the following statement illustrate?


If I don’t take this A.P. class, then I won’t do well on the exam. If I don’t do well on the A.P. exam, then I can’t get into a good college. If I can’t get into a good college, then I’ll never get a good job. If I can’t get a good job, then I’m going to have to live in my parents’ basement forever. Guess I’ll sign up for the A.P. class.

a)

Transitive Law of Logic (syllogism)

b)

Law of non-contradiction

c)

Law of excluded middle

d)

Fallacy of slippery slope

12.

Law of Excluded Middle

a)

if a statement is true, then it is true

b)

any statement is either true or false

c)

a statement cannot be both true and false

13.

What does the following statement illustrate?


"Fear is the path to the dark side. Fear leads to anger, anger leads to hate, and hate leads to suffering. I sense much fear in you." (Yoda)

a)

Transitive Law of Logic (syllogism)

b)

Law of non-contradiction

c)

Law of excluded middle

d)

Fallacy of slippery slope

14.

Law of non-contradiction

a)

reasoning with probability from examples or experience to general rules

b)

deals with the proper modes of reasoning

c)

A statement cannot be both true and false

d)

If a statement is true, then it is true

15.

Which law of logic does this statement break?


The color white is not a color.

a)

Law of Identity

b)

Law of Syllogism (transitive)

c)

Law of non-contradiction

d)

Law of the Excluded Middle