A bag contains red counters and blue counters.
Two counters are removed at random, one after the other, without replacement.
Given that the second counter removed is red, find the probability that the first counter removed is red.
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A bag contains red counters and blue counters.
Two counters are removed at random, one after the other, without replacement.
Given that the second counter removed is red, find the probability that the first counter removed is red.
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