quiz 8

Question 1

Give the definition of a disjunctive syllogism.

Answer 1

an either or statement

Question 2

In a disjunctive syllogism, what kind of proposition is the major premise?

Answer 2

A disjunctive statement

Question 3

In a disjunctive syllogism, what kind of proposition is the minor premise?

Answer 3

A categorical statement

Question 4

What is a disjunctive statement

Answer 4

An either/or statement.

Question 5

Give the form of disjunctive statements, (use P and Q)

Answer 5

Either P or Q.

Question 6

What do we call the elements of a disjunctive statement?

Answer 6

disjuncts or alternants

Question 7

How many disjuncts or alternants are there?

Answer 7

Two

Question 8

Where do you find the first alternant?

Answer 8

before the or

Question 9

Where do you find the second alternant?

Answer 9

after the or

Question 10

How many of the four possible moods for disjunctive syllogisms are valid?

Answer 10

Only two of the disjunctive moods are valid

Question 11

What Latin phrase do we use to characterize valid disjunctive moods? What does it mean in English?

Answer 11

tollendo ponens: affirmation by denial

Question 12

What Latin phrase do we use to characterize the invalid disjunctive moods? What does it mean in English?

Answer 12

ponendo tollens: denial by affirmation

Question 13

Give the form of a syllogism in the first valid disjunctive mood, (use P and (?)

Answer 13

Either P or Q. Not P. Therefore, Q.

Question 14

Give the form of a syllogism in the second valid disjunctive mood, (use P and Q)

Answer 14

Either P or Q. Not Q. Therefore, P.