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Mathematics, 26.02.2021 20:50 staz13wiggins

A bag contains 8 blue and 3 red counters. Two counters are removed, without replacement.
Draw a tree diagram and use it to calculate the probability that at least one of the counters is red.
Write your answer as a fraction.

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A bag contains 8 blue and 3 red counters. Two counters are removed, without replacement.
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