Question 746012:
A name is selected at random from a group that has 6 girls and 4 boys. Then, a different name is selected from the remaining names. What is the probability that both people selected are girls?
and
A jar contains 4 red marbles, 5 green marbles, and 7 blue marbles. You select two marbles at random. One marble is selected and not replaced. Then a second marble is selected. What is the probability of selecting a red marble and then another red marble?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A name is selected at random from a group that has 6 girls and 4 boys. Then, a different name is selected from the remaining names. What is the probability that both people selected are girls?
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P(girl and girl) = (6/10)(5/9) = 1/3
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A jar contains 4 red marbles, 5 green marbles, and 7 blue marbles. You select two marbles at random. One marble is selected and not replaced. Then a second marble is selected. What is the probability of selecting a red marble and then another red marble?
P(red and red) = (4/16)(3/15) = 1/20
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Cheers,
Stan H.
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