SOLUTION: In a class of 6, there are 2 students who have done their homework. If the teacher chooses 2 students, what is the probability that both of them have done their homework?

Question 970166: In a class of 6, there are 2 students who have done their homework.
If the teacher chooses 2 students, what is the probability that both of them have done their homework?
Answer by Evy Hofbauer(7) (Show Source): You can put this solution on YOUR website!
Probability of choosing a student with their homework complete = P(HC)
P(CH1) or homework complete for 1 student = 2/6 = 1/3
P(CH2) or homework complete for a 2nd student = 1/5
because there is 1 student left with their homework complete and 5 overall students left to choose from. Im other words we can not choose the same student agian.
To find the probibility of choosing both we multiply them together.
P(CH) = P(CH1) * P(CH2) = 1/3 * 1/5 = 1/15
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