Mathematics, 27.05.2021 06:10, olaffm9799

There are 9 students in a class: 2 boys and 7 girls. If the teacher picks a group of 4 at random, what is the probability that everyone in the group is a girl?

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There are 9 students in a class: 2 boys and 7 girls. If the teacher picks a group of 4 at random, wh...