Question 1

The predicate term of the conclusion in a standard form categorical syllogism is called the

Accepted Answer

The predicate term of the conclusion in a standard form categorical syllogism is called the major term.

Question 2

Which of the following is not required in order for a categorical syllogism to be in standard form?

Accepted Answer

The premises and the conclusion do not need to be true in order for a categorical syllogism to be in standard form.

Question 3

The mood of a standard-form categorical syllogism whose major premise is universal affirmative, minor premise is particular affirmative, and conclusion is particular affirmative would be

Accepted Answer

C

Question 4

The figure of a standard-form categorical syllogism whose middle term is the subject term of the major premise and subject term of the minor premise would be

Accepted Answer

The answer of The figure of a standard-form categorical syllogism...

Question 5

The form of a categorical syllogism is completely specified by

Accepted Answer

The form of a categorical syllogism is completely specified by its figure and mood. The figure refers to the position of the middle term in the premises, and the mood refers to the quality and quantity of the propositions.

Question 6

Which of the following categorical syllogisms is in standard form?

Accepted Answer

The answer of Which of the following categorical syllogisms is...

Question 7

Identify the mood and figure of this standard-form categorical syllogism:
Some turncoats are not confederate soldiers. 
No confederate soldiers are abolitionists. 
So, some turncoats are abolitionists.

Accepted Answer

The syllogism has the form: Some S are not P (O), No P are M (E), therefore Some S are M (I). The figure is determined by the position of the middle term, which is in the predicate position of the first premise and the subject position of the second premise, making it figure 4. Hence, the mood and figure is OEI-4.

Question 8

Identify the mood and figure of this standard-form categorical syllogism:
All excellent teachers are people who care about students.
All University 101 instructors are people who care about students. 
So, all University 101 instructors are excellent teachers.

Accepted Answer

The syllogism is in the form of AAA-2. The mood is AAA because all three propositions are universal affirmatives (All S are P). The figure is 2 because the middle term is the predicate in both premises.

Question 9

The Venn diagram representation of "All sailors are pirates" is which of the following?

Accepted Answer

The answer of The Venn diagram representation of "All sailors...

Question 10

The Venn diagram representation of "No sailors are pirates" is which of the following?

Accepted Answer

The answer of The Venn diagram representation of "No sailors...

Question 11

The Venn diagram representation of "Some sailors are pirates" is which of the following?

Accepted Answer

The answer of The Venn diagram representation of "Some sailors...

Question 12

The Venn diagram representation of "Some sailors are not pirates" is which of the following?

Accepted Answer

The answer of The Venn diagram representation of "Some sailors...

Question 13

Identify the Venn diagram representation of the following syllogism:
All minerals are rocks. 
All diamonds are rocks.
So, all minerals are diamonds.

Accepted Answer

The answer of Identify the Venn diagram representation of the...

Question 14

Identify the Venn diagram representation of the following syllogism:
Some ultraviolet radiation is not harmful to humans. 
All ultraviolet radiation is a carcinogen.
So, some carcinogens are not harmful to humans.

Accepted Answer

The answer of Identify the Venn diagram representation of the...

Question 15

Identify the Venn diagram representation of the following syllogism:
Some violinists are percussionists. 
Some trombonists are percussionists. 
So, some trombonists are violinists.

Accepted Answer

The answer of Identify the Venn diagram representation of the...

Question 16

A categorical statement has existential import if and only if

Accepted Answer

The answer of A categorical statement has existential import if...

Question 17

Which of the following relations on the Square of Opposition is valid, according to modern categorical logic?

Accepted Answer

In modern categorical logic, the relation of contradictories is valid, where one proposition is the negation of the other, ensuring that one must be true and the other false.

Question 18

Which of the following immediate inferences is invalid according to modern categorical logic?

Accepted Answer

Contraposition by limitation is not a valid immediate inference in modern categorical logic because it involves changing the quality of the proposition and adding a limitation, which is not a valid transformation in modern logic.

Question 19

An enthymeme is an argument that

Accepted Answer

An enthymeme is an argument that has missing or unstated steps.

Question 20

When supplying unstated steps, the principles of fairness and charity require that we

Accepted Answer

Adding only true (or at least plausible) steps ensures fairness and charity in supplying unstated steps.

Quiz 6: Categorical Logic: Syllogisms

The predicate term of the conclusion in a standard form categorical syllogism is called the

Which of the following is not required in order for a categorical syllogism to be in standard form?

The mood of a standard-form categorical syllogism whose major premise is universal affirmative, minor premise is particular affirmative, and conclusion is particular affirmative would be

The figure of a standard-form categorical syllogism whose middle term is the subject term of the major premise and subject term of the minor premise would be

The form of a categorical syllogism is completely specified by

Which of the following categorical syllogisms is in standard form?

Identify the mood and figure of this standard-form categorical syllogism: Some turncoats are not confederate soldiers. No confederate soldiers are abolitionists. So, some turncoats are abolitionists.

Identify the mood and figure of this standard-form categorical syllogism: All excellent teachers are people who care about students. All University 101 instructors are people who care about students. So, all University 101 instructors are excellent teachers.

The Venn diagram representation of "All sailors are pirates" is which of the following?

The Venn diagram representation of "No sailors are pirates" is which of the following?

The Venn diagram representation of "Some sailors are pirates" is which of the following?

The Venn diagram representation of "Some sailors are not pirates" is which of the following?

Identify the Venn diagram representation of the following syllogism: All minerals are rocks. All diamonds are rocks. So, all minerals are diamonds.

Identify the Venn diagram representation of the following syllogism: Some ultraviolet radiation is not harmful to humans. All ultraviolet radiation is a carcinogen. So, some carcinogens are not harmful to humans.

Identify the Venn diagram representation of the following syllogism: Some violinists are percussionists. Some trombonists are percussionists. So, some trombonists are violinists.

A categorical statement has existential import if and only if

Which of the following relations on the Square of Opposition is valid, according to modern categorical logic?

Which of the following immediate inferences is invalid according to modern categorical logic?

An enthymeme is an argument that

When supplying unstated steps, the principles of fairness and charity require that we