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3 years ago

A math class has 7 girls and 3 boys in the seventh grade and 5 girls and 5 boys in the eighth grade. The teacher randomly select

s 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.

Mathematics

1 answer:

Elena L [17]3 years ago

5 0

$|\Omega|=10\cdot10=100\\ |A|=3\cdot5=15\\\\ P(A)=\dfrac{15}{100}=\dfrac{3}{20}$

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