Hello, I would like to ask a kind of multiple angled question I have noticed a "lack of" while studying logic. Is "the process of elimination" a sound "Rule of Inference"? (Perhaps, we've all used this "process of elimination" in taking a multiple choice test.) I have read two books on Logic: one by Irving M.Copi & Carl Cohen as well as The Logic Book by Merrie Bergmann, James Moor, Jack Nelson. I have not seen a single logic text nor a logic website where "the process of elimination" appears as a inference rule. Why is this not included as a rule? Is it not considered Deductive? Does it go by another name? What is the deal? Thank you for considering this question in advance.