Philosophy Quiz 3
Any argument with a false premise is invalid.
False
Any argument with all true premises and true conclusion must be valid.
False
If a valid argument has all false premises, then it must have a false conclusion.
False
If an argument does not have a true conclusion, then it cannot be valid.
False
If an argument has all true premises and true conclusion, then it must be valid.
False
If an argument is valid but has a false premise, then it must have a false conclusion.
False
Some arguments are best classified as true.
False
The conclusion of an unsound argument must be false.
False
The following argument is sound:All dogs are cats.Dr. Cole is a dog.So, Dr. Cole is a cat.
False
The following argument is valid: If God exists, then there is meaning to human suffering. There is meaning to human suffering. Thus, God exists.
False
The following argument is valid: If you are a cat, then you are an animal. Moreover, if you are a mammal, then you are animal. Thus, if you are a cat, then you are a mammal.
False
Indicate the conclusion of the following argument: Every even number is divisible by two. Thus, six is divisible by 2, since six is an even number.
Six is divisible by 2.
An argument can employ good reasoning but have false premises.
True
An argument cannot be completely good without satisfying both the factual claim and inferential claim.
True
If a deductive argument has all true premises and false conclusion, then it must be invalid.
True
If a deductive argument is not valid, then it cannot be sound.
True
If a valid argument has a false conclusion, then it must have a false premise and must be unsound.
True
If an argument does not have a true conclusion, then it cannot be sound
True
If an argument is valid but has a false conclusion, then it must have a false premise.
True
Some unsound arguments are valid.
True
The conclusion of a sound argument must be true.
True
The following argument is deductive: Every even number is divisible by two. Thus, six is divisible by 2, since six is an even number.
True
The following argument is sound: All men are mortal. Dr. Cole is a man. So, Dr. Cole is mortal.
True
The following argument is valid: All dogs are cats. Dr. Cole is a dog. So, Dr. Cole is a cat.
True
A sound argument cannot have a false conclusion.
True, A sound argument is one that is valid with all true premises. If an argument is valid, that means that IF the premises are true, then the conclusion must be true. And if an argument is sound, then the premises are true. Thus, the conclusion of a sound argument must be true.
"Either God exists or human suffering is meaningless. I cannot accept the human suffering is meaningless. Thus, God must exist." This argument is an instance of:
disjunctive syllogism
"If you have been studying, then you will get this question right. Moreover, if you get this question right, then you will be happy. Thus, if you have been studying, then you will be happy." The above argument is an instance of:
hypothetical syllogism
"If you worked hard in life, then you will be successful. Since you are successful, it follows that you must have worked hard in life." This arguments is:
invalid: affirming the consequent
Consider the following argument: If ghosts are real, then not everything is physical. Thus, everything is physical, since ghosts are not real. This argument is:
valid: modus ponens
