SOLUTION: A bag of marbles contains 6 red marbles and 4 blue marbles. If two are selected simultaneously, what is the probability that at least 1 blue marble is drawn?

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Question 201533: A bag of marbles contains 6 red marbles and 4 blue marbles. If two are selected
simultaneously, what is the probability that at least 1 blue marble is drawn?
Answer by stanbon(25959) About Me  (Show Source):
You can put this solution on YOUR website!
A bag of marbles contains 6 red marbles and 4 blue marbles. If two are selected
simultaneously, what is the probability that at least 1 blue marble is drawn?
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P(at least one is blue) = 1 - P(none are blue)
= 1 - [6C2/10C2]
= 1 - 15/45
= 1 - (1/3)
= 2/3
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Cheers,
Stan H.