Problem 43126. Probabilities - Balls and urns - 01

Created by Massimo Zanetti in Community

The urn contains B blue balls and R red balls. Each trial consists of drawing one random ball from the urn and observing its color. Then the ball is placed back in the urn.

What is the probability that, after N trials, the number of red balls is K?

Solution Stats

76.47% Correct | 23.53% Incorrect
Last solution submitted on Nov 28, 2018

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