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26 July, 17:59

A math class has 3 girls and 7 boys in the seventh grade and 3 girls and 3 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 girls?

Write your answer as a fraction in simplest form.

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  1. 26 July, 20:07
    0
    Prob (boy from 7th grade) = 7/10

    Prob (boy from 8th grade) = 2/4 = 1/2

    Prob (2 boys) = (7/10) (1/2) = 7/20
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