Exam 1 Practice Quizzes Flashcards
The kinds of sentences that are of interest as premises or conclusions in logic must be:
Statements that are evaluable as either true or false
In a good deductive argument, the truth of the conclusion is _____ by the truth of the premises, whereas in a good inductive argument, the truth of the conclusion is _____ by the truth of the premises
1st blank: Guaranteed or entailed
2nd blank: Made likely or probable
If an argument is valid, then it is best classified as deductive or inductive?
Deductive
If an argument is sound, what else can you infer about it?
It is valid
If all that you know about an argument is that its premises are ALL true and its conclusion id false, what can you conclude about its validity
It is invalid
Being a reasonable human being is a necessary condition for being a mammal (T/F)
False
Being a square is sufficient for being a shape (T/F)
True
Being an animal is a necessary condition for being a cat. Is it also sufficient
No
Being a piece of aged cheddar is necessary, but not sufficient for being a cheese (T/F)
False
An argument being valid is sufficient for it to be sound (T/F)
False
An argument being sound is sufficient for it to be valid (T/F)
True
An argument being valid is sufficient for it to have at least one true premise (T/F)
False
An argument having ALL true premises and a false conclusion is sufficient for it being invalid (T/F)
True
