Tim Hortons at the Davis Centre has 10 large \"Rollup\" coffee cups left. Among the large cups are 2 winning cups with a prize. Three students are in line and each will buy a large coffee. The server randomly selects a cup for each of them. Given that the first student in line did not win a prize, what is the probability that the third student in line will win a prize? Please express your answer as an exact fraction. Number