The urn contains 5 balls 1 white and 4 black balls at random draw 2 balls. What is the probability

The urn contains 5 balls 1 white and 4 black balls at random draw 2 balls. What is the probability that the balls pulled out will be of the same color?

Since there is only one white balls, it is impossible to pull out two such balls.

The probability that the first ball turns out to be black is:

4: 5 = 4/5.

Then the probability that the second ball also turns out to be black will be:

(4 – 1) / (5 – 1) = 3/4.

Since these events are independent, the total probability is equal to the product:

4/5 * 3/4 = 3/5.

Answer: the desired probability is 3/5.