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Calista has 4 one-dollar bills, 2 five-dollar bills, and 3 ten-dollar bills in her wallet. If she randomly chooses two bills, what is the probability that both of them are five-dollar bills?
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Calista has 4 one-dollar bills, 2 five-dollar bills, and 3 ten-dollar bills in her wallet. If she randomly chooses two bills, what is the probability that both of them are five-dollar bills?

User Clarise
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2/9 because if there are 9 bills in her wallet and only two $5 bills then it has to be 2/9
User Tinister
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