Out of 15 students in a class, 9 are wearing blue shirts, 3 are wearing green shirts, and 3 are wearing red shirts. Four students are to be selected at random. What is the probability that at least one is wearing a green shirt?	Choose the correct choice from the following answers
A) 28/61 B) 38/71 C) 48/81 D) 58/91 E) 68/101
Total possible ways to choose 4 students out of 15 = 15C4 = 1365   The number of ways to choose 4 students with no green shirts = 12C4 = 495   P(no green shirts) = 495/1365 = 33/91   P(at least 1 green shirt) = 1 - 33/91 = 58/91   The answer is 58/91.
<result>D</result>
Out of 15 students in a class, 9 are wearing blue shirts, 3 are wearing green shirts, and 3 are wearing red shirts. Four students are to be selected at random. What is the probability that at least one is wearing a green shirt?