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WorksheetsIntro Logic Chapter One
Total questions: 27
Worksheet time: 14mins
If a valid argument has a true conclusion, it must have at least one true premise
True
False
A strong inductive argument may have a false conclusion
True
False
An invalid argument may have true premises and a true conclusion
True
False
A weak inductive argument must have at least one false premise
True
False
An invalid argument may have a true conclusion
True
False
An argument is invalid if and only if it is possible for the premises to be true and the conclusion false
True
False
A weak invalid argument may be cogent
True
False
A true statement may be valid
True
False
An invalid deductive argument may be a strong inductive argument
True
False
If an argument has all true premises, then it must be either cogent or sound
True
False
If an argument is invalid, it can't be sound
True
False
A valid argument may have a false conclusion
True
False
A deductive argument is a true argument
True
False
If an argument is cogent, it is strong
True
False
If an argument is cogent, it has all true premises
True
False
If an argument has all true premises, it must be strong
True
False
If a valid argument has a true conclusion, it must have at least one true premise
True
False
If a valid argument has a false conclusion, it must have at least one false premise
True
False
A weak inductive argument must have at least one false premise
True
False
A strong inductive argument may have a false conclusion, and an invalid argument may have a true conclusion
True
False
An argument is invalid if and only if it is possible for the premises to be true and the conclusion false
True
False
Which of these can be valid?
True premises and a true conclusion
True premises and a false conclusion
False premises and a true conclusion
False premises and a false conclusion
An argument can be invalid if it has
True premises/true conclusion
True premises/false conclusion
False premises/true conclusion
False premises/false conclusion
What is an argument?
A set of statements that are related to one another
A set of statements containing a central disagreement
A set of statements, some of which are premises and one of which is a conclusion, such that the premises putatively support the conclusion
A set of statements, some of which are premises and one of which is a conclusion, such that the premises guarantee the conclusion
Which of the following are true of a valid argument?
If the conclusion is false, all of the premises must be false
If the conclusion is true, all of the premises must be true
If the premises are all true, the conclusion must be true
If the conclusion is false, at least one premise must be false
Which of the following is true of an inductive argument?
If it has all true premises, it is cogent
If it is cogent, it has all true premises
If it has a false conclusion, it is weak
None of the above
Which of the following may be true of an invalid argument?
It may have a false conclusion
It may have true premises and a true conclusion
It can never be sound
All of the above
