Mathematics, 30.11.2021 02:00 allimaycatp8qgaq

There is a bad filler 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 probability of getting 1 blue?

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