Mathematics, 18.07.2020 17:01 Anliz0179

There is a bag filled with 3 blue and 4 red marbles. A marble is taken at random from the bag, the colour is noted and then it is not replaced. Another marble is taken at random. What is the probability of getting 2 that are different in colour?

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There is a bag filled with 3 blue and 4 red marbles. A marble is taken at random from the bag, the c...