This section emphasizes how to identify formal fallacies arguments that unsound because of their have the logical form or structure. The logic is primarily concerned with distinguish valid from invalid arguments. Are sets of sentence divided ways that of them claim to be reason, justification, or support for some other sentence in the set, The sentences that provide the reason or support are called “premise” and the sentence that is supposed to be supported by the premise is called “conclusion”. Therefore, valid arguments may have true premises and a true conclusion, false premises and a true conclusion or false premise and true conclusion, false promise and false conclusion