Statement forms that have both true and false statements among their substitution instances are called ……………………………………………..

Related MCQs

• A statement form that has only true substitution instances is called ……………………
• ………………………… is any sequence of symbols containing statement variables but no statements, such that when statements are substituted for the statement\ variables-the same statement being substituted for the same statement variable throughout- the result is a statement
• …………………………… 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
• 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.
• Any argument that results from the substitution of statements for statement variables in an argument form is called ………………………………
• ’statement form from which the statement results by substituting a different simple statement for each different statement variable’ is called ……………………..
• “ If a statement is false, then it implies any statement whatever”
• ………………………… is defined as any argument that is a substitution instance of an elementary valid argument form
• “If a statement is true, then it is implied by any statement whatever” is symbolized as
• “it is not the case that the antecedent is true and the consequent is false” is symbolized as……………………………………….