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I have 10 white marbles and 13 black marbles whats the probability that i get 2 black marbles before i get two white marbles?

I can get a black white and then black as long as i get 2 black before 2 white. Please help me i dont understand how to solve this. and please explain how you solved it. thanks

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Helpful Fun Thanks for voting Comments (1)
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thanks for trying but i found the persentage i needed now
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