Logic 9

Question 1

Figure 1

Answer 1

Major Premise: M is P
Minor Premise: S is M

Question 2

Figure 2

Answer 2

Major Premise: P is M
Minor Premise: S is M

Question 3

Figure 3

Answer 3

Major Premise: M is P
Minor Premise: M is S

Question 4

Figure 4

Answer 4

Major Premise: P is M
Minor Premise: M is S

Question 5

Immediate Inference

Answer 5

A statement that can be inferred directly from another statement.

Question 6

Converse

Answer 6

A statement that reverses the subject and predicate. It is only valid for E and I statments.

Question 7

Obverse

Answer 7

A statement of the opposite quality with a negated predicate. it is valid for all statements.

Question 8

Complement

Answer 8

The set of all terms not included in the given term.

Question 9

Contrapositive

Answer 9

a statement that reverses and negates both the subject and predicate of the orignial. It is valid for A and O.

Question 10

Valid

Answer 10

A syllogism is valid if and only if the premises imply the conclusion.

Question 11

Sound Syllogism

Answer 11

A sound syllogism is valid and has true premises.

Question 12

Counter-example

Answer 12

A counterexample to a syllogism is a syllogism of the same form as the original, but with obviously true premises and an obviously false conclusion, in order to show the original to be invalid.

Question 13

Distributed Term

Answer 13

A distributed term is a term that, within a statement, refers to all members of its category.