The probability is 99/400
Step-by-step explanation:
- It is given that the number of boys and girls in a class is as follows: Number of boys = 11 and Number of girls = 9
. Then, the total number of students in the class= 20 students.
- Then, the probability of choosing a boy = number of boys divided by total number of students in the class = 11/20
. Similarly, the probability of choosing the girl = number of girls divided by number of all students = 9/20
- Then , the probability of choosing one girl and a boy is = 11/20 * 9/20 = 99/400
