An argument can be proved invalid by constructing another argument of the same form with …………………….

Related MCQs

• Refutation by logical analogy is based on the fact that any argument whose specific form is an invalid argument form is ………………………..
• In case an argument is produced by substituting a different simple statement for each different statement variable in an argument form, that argument form is called ……………………
• An invalid argument form is one that has at least one substitution_________ with true premises and a false conclusion
• Any argument that results from the substitution of statements for statement variables in an argument form is called ………………………………
• If the specific form of a given argument has any substitution instance whose premises are true and whose conclusion is false, then the given argument is.
• …………………………… can be defined as an array of symbols containing statement variables but no statements, such that when statements are substituted for statement variables- the same statement being substituted for the same statement variable throughout – the result is an argument
• A valid standard form categorical syllogism must contain exactly __________terms, each of which is used in the same sense throughout the argument.
• An argument form is valid if and only if it’s expression in the form of a conditional statement is ……………
• ----------- changes its value from argument to argument.
• A valid argument with all true premises is termed as ------- argument