quiz 9 Flashcards
Give the definition of a conjunctive syllogism
The major premise is a conjunctive proposition that denies the two propositions contained therein can be true at the same time.
In a conjunctive syllogism, what kind of proposition is the major premise?
A conjunctive statement
In a conjunctive syllogism, what kind of proposition is the minor premise?
A categorical statement
What is a conjunctive statement?
A both . . . and statement
Give the form of conjunctive statements, (use P and Q)
Both P and Q
What do we call the elements of a conjunctive statement?
Conjuncts
How many Conjuncts are there?
two
Where do you find the first conjunct?
Before the “and”
Where do you find the second conjunct?
After the “and”
Give the symbolic form of a conjunctive syllogism.
Not both P and Q. P. Therefore, not Q.
Tell the number of moods into which conjunctive syllogisms are divided,
Four moods
Give the form of a syllogism in the first valid mood, (use P and Q)
Not both P and Q. P. Therefore, not Q.
Give the form of a syllogism in the second valid mood, (use P and Q)
Not both P and Q. Q. Therefore, not P.
True or false? There are four valid moods of conjunctive syllogisms.
false
True or false? All of the invalid moods are ponendo tollens.
false
