Two statements are ………………… when their material equivalence is a tautology

Related MCQs

• …………………………… 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
• ………………………… 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
• Statement forms that have both true and false statements among their substitution instances are called ……………………………………………..
• The two types of statements dealt within propositional logic are ……………………
• The two component statements of conjunction are called……………………………..
• The two component statements of disjunction are called ……………………………….
• When two statements are combined by using the phrase “if and only if”, the resulting compound statement is called …………………………………………..
• Conjunction is a compound proposition in which the word ………… is used to connect simple statements.
• A compound proposition whose truth-value is completely determined by the truth-values of it’s component statements is called …………………….
• Any argument that results from the substitution of statements for statement variables in an argument form is called ………………………………