Mathematics, 26.12.2019 12:31 chubby087
At a school there are 40 girls and 20 boys. everyone has either a pair of headphones or earbuds but not both 25 students have ear buds and 15 of them are girls if a student from the school is randomly picked what is the probability that the student is a boy?
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At a school there are 40 girls and 20 boys. everyone has either a pair of headphones or earbuds but...
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