An um contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is
Channel: Doubtnut
Date: 05/07/2020

An um contains 5 red and 5 black balls. A ball is drawn at random, its colour is noted and is returned to the urn. Moreover, 2 additional balls of the colour drawn are put in the um and then a ball is drawn at random. What is the probability that the second ball is red?