Alberto has a test in History that he completely forgot about. He is relieved when he sees it is only 5 multiple choice questions, each with options A, B, C, D, E. What is the probability that Alberto guesses on every question and gets 100%? What is the probability that Alberto passes by guessing? What is Alberto's expected mark? As Alberto reads the questions, he realizes that he does remember something from his class. If he can correctly eliminate two answers from each question, what are the chances he passes now? By how much does Alberto's expected mark increase