Question

A class contains 5 girls and 5 boys. Two are selected for a class committee. What is the probability that a girl and boy are selected?

Answer 1

20/39.

Explanation:

There are a total of 13 students.

Prob(Boy is selected) = 8/13

Prob(Girl is then selected) = 5/12

So probability ( Boy selected then a girl) = 8/13 * 5/12 = 10/39

- and the probability of Girl then a boy selected is also 10/39

So the required probability = 2 * 10/39

= 20/39.