DETAILS 0/10 Submissions Used MY NOTES Among 500 freshmen pursuing a business degree at a university, 343 are enrolled in an economics course, 244 are enrolled in a mathematics course, and 136 are enrolled in both an economics and a mathematics course. What is the probability that a freshman selected at random from this group is enrolled in each of the following? (Enter your answers to three decimal places.) Suggestion: sketch a Venn Diagram to help solve this problem. (a) an economics and/or a mathematics course (b) exactly one of these two courses (c) neither an economics course nor a mathematics course Show My Work (Optional)@ DETAILS TANFIN12 7.4.010. 0/10 Submissions Used MY NOTES Five balls are selected at random without replacement from an urn containing four white balls and six blue balls. Find the probability of the given event. (Round your answer to three decimal places.) All of the balls are blue. Show My Work (Optional) DETAILS TANFIN12 7.4.018. 0/10 Submissions Used MY NOTES Jacobs & Johnson, an accounting firm, employs 20 accountants, of whom 8 are CPAs. If a delegation of 2 accountants is randomly selected from the firm to attend a conference, what is the probability that 2 CPAs will be selected? (Round your answer to three decimal places.)