SOLUTION: In a class of 24 students, two students are selected at random. Vanessa and Trudy are two students in this class. What is the probability that one of them is selected?
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Question 749335: In a class of 24 students, two students are selected at random. Vanessa and Trudy are two students in this class. What is the probability that one of them is selected? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! In a class of 24 students, two students are selected at random. Vanessa and Trudy are two students in this class. What is the probability that one of them is selected?
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P(neither is selected) 22C2/24C2
P(both are selected) = 2C2/24C2
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P(one of them is selected) 1 - {[22C2+2C2]/24C2} = 1 - 0.8406 = 0.1594
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Cheers,
Stan H.
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