What Is The Simplest Contradiction?

What Is The Simplest Contradiction? The simplest or classic form of contradiction is the assertion both of some statement or proposition and its negation. So, for example, the statement-pair: “All fire engines are red,” and “It is not true that all fire engines are red” is contradictory. Which of the following is a contradiction? ∴(p∧q)∧∼(p∨q)