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17 October, 12:26

A bag that contains 7 red marbles, 8 blue marbles, and 5 green marbles. Mara randomly chose a marble, then she put it back and randomly chose another marble. What is the probability that she chose 2 blue marbles? Write your answer as a decimal.

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  1. 17 October, 12:34
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    So the probability she choses a blue marble on the first draw is 8/20 or 2/5 and since she replaces it so the second is 8/20 (2/5) again. Therefore, he chances of choosing 2 blue marbles is. 16 or 16%.
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