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At a local college, of the male students are smokers and are non-smokers. Of the female students, are smokers and are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are smokers?

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  1. Today, 02:44
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    The fraction of males who are smokers = 10/500 = 1/50

    The fraction of females who are smokers = 40/403

    The probability that both are smokers is the product of these two:

    P (both) = (1/50) * (40/403) = (4/5) * (1/403)
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