7. A science class has 8 juniors and 4 seniors. The teacher will randomly select 2 students, one at a time, to represent the class in a committee at the school. Given that the first student selected is a junior, what is the probability that the second student selected will be a senior?

Answer and Explanation

Your Answer is

Correct Answer is E

Explanation

From the meaning of the question, if the first student is junior and there are 11 students in total, then the probability of the second student being senior is 4/11, choose E