1.2A ae
"Either Hermione gets Ron or she gets Harry" is a conditional.
False
Although the famous forms method does not allow us to show that an argument is invalid, it does allow us to show the validity of every valid argument.
False
In determining whether an argument is a substitution instance of an argument form, we must be careful to take the order of the premises into account.
False
The antecedent of "Bill will behave better in the future if Hillary forgives Bill" is "Bill will behave better in the future."
False
The antecedent of "Either humans evolved from amoebas or humans were specially created by God" is "Humans evolved from amoebas."
False
The antecedent of "If Professor Snape was a disciple of Voldemort, then he should be imprisoned in Azkaban" is "He should be imprisoned in Azkaban."
False
The following argument is a substitution instance of disjunctive syllogism: Jill is in love with Sam or Henry; she is in love with Henry; so Jill is not in love with Sam.
False
The consequent of "If it was reported in the Daily Prophet, then it's true" is "It was reported in the Daily Prophet."
False ( The consequent is the then-clause of a conditional. "It was reported in the Daily Prophet" is the if-clause, so it is the antecedent)
In logic, we treat statements of the form "Either A or B" as saying the same thing as "Either A or B, but not both A and B."
False (Disjunctions are not exclusive)
If the successful candidate has a PhD in English literature or at least five years of university teaching experience, it follows that the successful candidate does not have both a PhD in English literature and at least five years of university teaching experience.
False (Most logicians evaluate disjunctions in the inclusive sense ("Either A or B, or both"), rather than the exclusive sense ("Either A or B, but not both")
"Either Fritz is a philosopher or a gambler" is a disjunction.
True
"There is no God" is the denial of "There is a God."
True
A conditional is an "if-then" statement.
True
A disjunction is an "either-or" statement.
True
A formally valid argument is one that is valid in virtue of its form.
True
A substitution instance of an argument form is an argument that results from uniformly replacing the variables in that form with statements (or terms).
True
A valid argument form is one in which every substitution instance is a valid argument.
True
An argument form is a pattern of reasoning.
True
In logic, we treat statements of the form "Either A or B" as saying the same thing as "Either A or B, or both A and B."
True
The antecedent of "If Professor Dumbledore died in Book Six, then he won't make an appearance in Book Seven" is "Professor Dumbledore died in Book Six."
True
The consequent of "If Dolores Umbrage despises Harry, then she's a disciple of he-who-shall-not-be-named" is "She's a disciple of he-who-shall-not-be-named."
True
The exclusive sense of "or" means "Either A or B, but not both."
True
The if part of a conditional is the antecedent.
True
The inclusive sense of "or" means "Either A or B, or both."
True
The parts of a disjunction are disjuncts.
True
The then part of a conditional is the consequent.
True
The negation of a statement is its denial.
True (Definition of negation.)
The exclusive sense of "or" means "Either A or B, but not both."
True: The inclusive sense of "or" means "Either A or B, or both". This is the exclusive sense, however.
The antecedent of "The Sonics will move to Oklahoma only if the league permits it" is "The Sonics will move to Oklahoma."
True: The prhase "only if" introduces the consequent of the condutional.
The consequent of "There is air in the room if there is fire in the room" is "there is air in the room."
True: This is an inverted if-then statement in which the consequent is presented first ("There is air in the room").
The consequent of "There is fire in the room only if there is air in the room" is "There is air in the room".
True: This is true, because the phrase "only if" introduces the consequent of a conditional statment.
