# In the first urn there are 20 balls, among them 3 are white, in the second urn there are 15 balls and among them 2 are white.

August 3, 2020 | Education

| **In the first urn there are 20 balls, among them 3 are white, in the second urn there are 15 balls and among them 2 are white. They took a ball from the first urn and transferred it to the second. What is the probability that the ball taken from the second urn after that is white?**

The probabilities of hypotheses are

P1 = 3/20

P2 = 17/20

P1 (A) = 3/16

P2 (A) = 2/16

P = 3/20 * 3/16 + 17/20 * 2/16 = 43/320

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