# There are 5 white and 4 black balls in the urn. 2 balls are drawn from it in a row. Find the probability that both balls are white.

December 29, 2020 | education

| **There are 5 white and 4 black balls in the urn. 2 balls are drawn from it in a row. Find the probability that both balls are white. if the balls are not withdrawn and a white ball appears at the first withdrawal.**

After removing 1 white ball, 4 white and 4 black balls remain in the urn.

Let’s calculate the fraction of the remaining balls of each color in the urn:

4 white balls / 8 balls = 0.5

4 black balls / 8 balls = 0.5

The total number of balls is taken as 100%. Accordingly, the probability that the second ball drawn will turn out to be white is 50%.

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