SOLUTION: Mr c needs two student from a class of 18 girls and 12 boys.what is the probability that both student chooses are girls?
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Question 1044410: Mr c needs two student from a class of 18 girls and 12 boys.what is the probability that both student chooses are girls? Answer by addingup(3677) (Show Source):
You can put this solution on YOUR website! Given that the number of boys and girls in a class is as follows:
Number of boys = 12
Number of girls =18
. . . . . . . . -----
Total students = 30
:
The probability of choosing a girl = number of girls/total number of students in the class = 18/30
:
The probability of choosing the 2nd girl = number of remaining girls/number of all students minus the chosen girl = 17/29
:
Thus, the probability of choosing two girls is :
(18/30)*(17/29)= 0.3517 = 35.17%
:
John
