Which law of logic is defined as ';if a conditional is true and its consequent is false, then its antcecedent?

which law of logic is defined as ';if a conditional is true and its consequent is false, then its antcecedent is false';





1) Law of Syllogism (Chain Rule)


2) Law of COnjunct6ion (Law of Conjunctive Addition)


3) Law of Disjunctive Addition


4) Law of Modus TollensWhich law of logic is defined as ';if a conditional is true and its consequent is false, then its antcecedent?
I'll write it logically.





1) A -%26gt; B


2) ~B


// ~A





The law of logic is modus tollens.





I'm not sure what #1 is, but I know what the others are.





2) Law of Conjunctive Addition goes as follows:





1. A


2. B


// A * B





Law of Disjunctive Addition.





1. A.


// A v B





(essentially, once you know that something is true, it follows that that something ORed with someone else, whether it is true or false, is true).