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13 March, 11:26

A bag contains 10 marbles: 4 are green, 2 are red, and 4 are blue. Christine chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles she chooses are blue? Write your answer as a fraction in simplest form.

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  1. 13 March, 11:45
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    1st marble is blue is 4/10

    2nd marble is blue is 3/9

    Multiple together and the probability is 12/90 or 2/15
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