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Mathematics 17 Online
OpenStudy (anonymous):

A bag contains 4 red marbles, 2 green ones, 2 white ones, and 1 purple one. Michelle reaches into the bag and grabs 5 of the marbles. Find the probability that she has 2 green ones and 1 of each of the other colors.

OpenStudy (anonymous):

(2C2) (4C1) (2C1) (1C1) / (9C5)

OpenStudy (anonymous):

i tried that and i got 4/63 but the answer shows as 2/63

OpenStudy (anonymous):

ok, are you sure you didn't leave anything out?

OpenStudy (anonymous):

yes I'm positive! I'm stumped :(

OpenStudy (anonymous):

maybe he made the answer key wrong

OpenStudy (anonymous):

i would think so.

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