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An urn contains 10 black and 10 white balls. Draw 3

b) with replacement . what is probability that all three are white
asked in Probability by Boss (10.7k points) | 40 views

1 Answer

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Probability of selecting the 1st ball as white=10/20

Since replacement is allowed, probability of selecting the second ball as white =10/20

Similarly, the probability of selecting the third ball as white=10/20

Therefore, the required probability = (10/20)^3=1/8
answered by Active (2.6k points)

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