Mathematics, 26.02.2021 03:00 jairus34

A bag contains 3 red marbles and 4 blue marbles. A marble is taken at random from the bag and replaced. Another marble is taken from the bag. Work out the probability that two marbles taken from the bag are the same colour. Give your answer as a fraction.

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A bag contains 3 red marbles and 4 blue marbles. A marble is taken at random from the bag and replac...