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    Probability of selection from a group

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    We have 7 boys and 3 girls in our church choir. There is an upcoming concert in the local town hall. Unfortunately, we can only have 5 youths in this performance. This performance team of 5 has to be picked randomly from the crew of 7 boys and 3 girls.

    a. What is the probability that all 3 girls are picked in this team of 5?
    b. What is the probability that none of the girls are picked in this team of 5?
    c. What is the probability that 2 of the girls are picked in this team of 5?

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