Online CoursesBased on data from a survey sponsored by Sallie Mae, 10% of undergraduate students take online courses only. If two undergraduate students are randomly selected, what is the probability that they both take online courses only?

Standard Tests Standard tests, such as the SAT or ACT or MCAT, tend to make extensive use of multiple-choice questions because they are easy to grade using software. If one each multiple-choice question has possible correct answers of a, b, c, d, e what is the probability of a wrong answer if the answer is a random guess?