A science class has 5 girls and 5 boys in the seventh grade and 3 girls and 5 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys? Write your answer as a fraction in simplest form.

Question

Mathematics

Vegas

8 September, 09:08

A science class has 5 girls and 5 boys in the seventh grade and 3 girls and 5 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both boys? Write your answer as a fraction in simplest form.

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Answers (1)

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Guadalupe Holder · Answer 1

We have a total of 10 boys & 8 Girls, then the sample space consist of 18 elements.

P (selecting 1 boy) = (total number of boys/by 18) = P (boy) = 10/18=5/9