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Mathematics 10 Online
OpenStudy (anonymous):

A science class has 12 boys and 15 girls. What is the probability that a student chosen at random is a boy?

jimthompson5910 (jim_thompson5910):

P(Boy) = Probability of selecting a boy

jimthompson5910 (jim_thompson5910):

P(Boy) = (# of boys)/(# of students total)

jimthompson5910 (jim_thompson5910):

be sure to reduce the fraction as much as possible

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