A multiple-choice test has six possible answers for each question. (a) If a student guesses at the answer, what is the probability that he or she selects the correct answer for one particular question? (b) If the student first eliminates one of the six possible answers and guesses from the remaining possibilities, what is the probability that he or she selects the correct answer to that question? (a) If a student guesses at the answer, the probability that he or she selects the correct answer for one particular question is (Type an integer or a simplified fraction.) (b) If the student first eliminates one of the six possible answers and guesses from the remaining possibilities, the probability that he or she selects the correct answer to that question is (Type an integer or a simplified fraction.)