Question 1

On the Traditional Square of Opposition, I and E statements are contraries.

Accepted Answer

A) True 
 B)False  False

Question 2

If "No prestidigitators are masters of illusion" is true, what can be inferred about "All nonprestidigitators are masters of illusion"? Explain.

Accepted Answer

The statement "All nonprestidigitators are masters of illusion" cannot be inferred from the statement "No prestidigitators are masters of illusion". The first statement is about prestidigitators, while the second statement is about nonprestidigitators. The fact that no prestidigitators are masters of illusion does not provide any information about the abilities or characteristics of nonprestidigitators. Therefore, we cannot make any inference about nonprestidigitators being masters of illusion based on the given statement.

Question 3

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: Some parakeets are birds attracted to shiny objects.

Accepted Answer

I, parakeets, birds attracted to shiny objects, particular, affirmative

Question 4

"Only students with a 3.0 or higher are members of the Tri-Lambda honor society" is a stylistic variant of the standard-form categorical statement

Accepted Answer

A)  "All students with a 3.0 or higher are members of the Tri-Lambda honor society." 
B)  "No members of the Tri-Lambda honor society are students with a 3.0 or higher." 
C)  "All members of the Tri-Lambda honor society are students with a 3.0 or higher." 
D)  "Some students with a 3.0 or higher are members of the Tri-Lambda honor society." 
A)  "All students with a 3.0 or higher are members of the Tri-Lambda honor society." 
B)  "No members of the Tri-Lambda honor society are students with a 3.0 or higher." 
C)  "All members of the Tri-Lambda honor society are students with a 3.0 or higher." 
D)  "Some students with a 3.0 or higher are members of the Tri-Lambda honor society."

Question 5

Name the logical relation that holds between the two categorical statements that follow. In the case of subalternation, indicate which statement is the superaltern and which is the subaltern. If the pair does not exemplify any of the logical relations we have discussed, simply write "None."
No sailors are navigators. / Some nonnavigators are not nonsailors.

Accepted Answer

Contraposi

Question 6

"Not all lawyers are crooks" is a stylistic variant of "Some lawyers are crooks."

Accepted Answer

A) True 
 B)False

Question 7

If "Some alien races are pacifists" is true, what may be inferred about "No alien races are nonpacifists"? Explain.

Accepted Answer

Some alien races are pacifists

Question 8

If "All Ferengi are entrepreneurs" is true, what may be inferred about "Some entrepreneurs are not non-Ferengi"? Explain.

Accepted Answer

All Ferengi are entrepreneurs.

Question 9

A categorical statement is a statement that relates two classes or categories.

Accepted Answer

A) True 
 B)False

Question 10

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: All rubies are red gems.

Accepted Answer

A, rubies,

Question 11

The obverse of "All pigs are intelligent creatures" is

Accepted Answer

A)  "Some intelligent creatures are pigs." 
B)  "All non-intelligent creatures are non-pigs." 
C)  "No pigs are non-intelligent creatures." 
D)  "Some pigs are not intelligent creatures." 
A)  "Some intelligent creatures are pigs." 
B)  "All non-intelligent creatures are non-pigs." 
C)  "No pigs are non-intelligent creatures." 
D)  "Some pigs are not intelligent creatures."

Question 12

When two standard-form categorical statements are corresponding, they

Accepted Answer

A)  have the same subject term and same predicate term. 
B)  are logically equivalent. 
C)  are necessarily true. 
D)  have the same quantifier. 
A)  have the same subject term and same predicate term. 
B)  are logically equivalent. 
C)  are necessarily true. 
D)  have the same quantifier.

Question 13

If "All Burmese are Asians" is true, what can be inferred about "Some non-Asians are non-Burmese"?

Accepted Answer

The statement "Some non-Asians are non-B

Question 14

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: Some scientific geniuses are not college graduates.

Accepted Answer

O, scientific genius

Question 15

The rule of obversion is valid only for E and I statements.

Accepted Answer

A) True 
 B)False

Question 16

Put this statement into standard form: Only philosophers know the meaning of life.

Accepted Answer

All people who know

Question 17

"Some people are never satisfied" is a standard-form O statement.

Accepted Answer

A) True 
 B)False

Question 18

Put this statement into standard form: Steve buys nothing but the best for his kids.

Accepted Answer

All things that Stev

Question 19

"Some soft drinks are not high-calorie beverages" is a standard-form

Accepted Answer

A)  A statement. 
B)  E statement. 
C)  I statement. 
D)  O statement. 
A)  A statement. 
B)  E statement. 
C)  I statement. 
D)  O statement.

Question 20

Two statements are logically equivalent if

Accepted Answer

A)  each validly implies the other. 
B)  they have the same subject term and the same predicate term. 
C)  they are both universal statements. 
D)  they have the same standard form. 
A)  each validly implies the other. 
B)  they have the same subject term and the same predicate term. 
C)  they are both universal statements. 
D)  they have the same standard form.

On the Traditional Square of Opposition, I and E statements are contraries.

If "No prestidigitators are masters of illusion" is true, what can be inferred about "All nonprestidigitators are masters of illusion"? Explain.

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: Some parakeets are birds attracted to shiny objects.

"Only students with a 3.0 or higher are members of the Tri-Lambda honor society" is a stylistic variant of the standard-form categorical statement

"Not all lawyers are crooks" is a stylistic variant of "Some lawyers are crooks."

If "Some alien races are pacifists" is true, what may be inferred about "No alien races are nonpacifists"? Explain.

If "All Ferengi are entrepreneurs" is true, what may be inferred about "Some entrepreneurs are not non-Ferengi"? Explain.

A categorical statement is a statement that relates two classes or categories.

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: All rubies are red gems.

The obverse of "All pigs are intelligent creatures" is

When two standard-form categorical statements are corresponding, they

If "All Burmese are Asians" is true, what can be inferred about "Some non-Asians are non-Burmese"?

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: Some scientific geniuses are not college graduates.

The rule of obversion is valid only for E and I statements.

Put this statement into standard form: Only philosophers know the meaning of life.

"Some people are never satisfied" is a standard-form O statement.

Put this statement into standard form: Steve buys nothing but the best for his kids.

"Some soft drinks are not high-calorie beverages" is a standard-form

Two statements are logically equivalent if

Basic Concepts

Identifying Arguments

Logic and Language

Informal Fallacies

Categorical Logic: Syllogisms

Statement Logic: Truth Tables

Statement Logic: Proofs

Predicate Logic

Inductive Logic

Filters

Exam 5: Categorical Logic: Statements

On the Traditional Square of Opposition, I and E statements are contraries.

If "No prestidigitators are masters of illusion" is true, what can be inferred about "All nonprestidigitators are masters of illusion"? Explain.

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: Some parakeets are birds attracted to shiny objects.

"Only students with a 3.0 or higher are members of the Tri-Lambda honor society" is a stylistic variant of the standard-form categorical statement

"Not all lawyers are crooks" is a stylistic variant of "Some lawyers are crooks."

If "Some alien races are pacifists" is true, what may be inferred about "No alien races are nonpacifists"? Explain.

If "All Ferengi are entrepreneurs" is true, what may be inferred about "Some entrepreneurs are not non-Ferengi"? Explain.

A categorical statement is a statement that relates two classes or categories.

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: All rubies are red gems.

The obverse of "All pigs are intelligent creatures" is

When two standard-form categorical statements are corresponding, they

If "All Burmese are Asians" is true, what can be inferred about "Some non-Asians are non-Burmese"?

Name the form of the following categorical statement (A, E, I, or O); identify the subject term and predicate term; and state the quantity and quality: Some scientific geniuses are not college graduates.

The rule of obversion is valid only for E and I statements.

Put this statement into standard form: Only philosophers know the meaning of life.

"Some people are never satisfied" is a standard-form O statement.

Put this statement into standard form: Steve buys nothing but the best for his kids.

"Some soft drinks are not high-calorie beverages" is a standard-form

Two statements are logically equivalent if

Basic Concepts

Identifying Arguments

Logic and Language

Informal Fallacies

Categorical Logic: Syllogisms

Statement Logic: Truth Tables

Statement Logic: Proofs

Predicate Logic

Inductive Logic

Filters