Consider a 10-question test in which questions can be answered either correctly or incorrectly. a) How many different ways are there to answer the questions so that eight are correct and two are incorrect? b) How many different ways are there to answer the questions so that at least eight are correct? a) There are ways to answer the questions so that eight are correct and two are incorrect. (Simplify your answer. Type an integer or a fraction.) b) There are ways to answer the questions so that at least eight are correct. (Simplify your answer Type an integer or a fraction.)