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A gumball machine has 25 yellow gumballs, 15 blue gumballs, and 10 green gumballs. Samantha wants...

A gumball machine has 25 yellow gumballs, 15 blue gumballs, and 10 green gumballs. Samantha wants a green gumball. What is the probability that she will get the green gumball on her third try?

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