Suppose 5 men out of 100 and 25 women out of 10000 are colorblind. A colorblind person is chosen at random. What is the probability of this person being male? (Assume males and females to be in equal numbers)
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If 5 out of 100 men are colourblind, then 500 out of 10,000 will be colourblind.
Since only 25 out of 10,000 women are colourblind, the probability of this person being colourblind is 500/525.
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