Probability Basicshard
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An urn initially contains 1 red ball and 1 blue ball. In a sequence of trials, a ball is selected at random, its color is noted, and it is returned to the urn along with an additional ball of the same color. What is the probability that the first red ball is selected on the third draw?
An urn initially contains 1 red ball and 1 blue ball. In a sequence of trials, a ball is selected at random, its color is noted, and it is returned to the urn along with an additional ball of the same color. What is the probability that the first red ball is selected on the third draw?