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10 September, 06:29

There are 9 students in a class: 7 boys and 2 girls. if the teacher picks a group of 3. at random, what is the probability. that everyone in the group is a boy?

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  1. 10 September, 06:37
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    There is a 1 out of 3 chance of a full boy group
  2. 10 September, 06:45
    0
    9 students in a class: 7 boys and 2 girls. picks a group of 3 at random P (all boys) = 7/9*6/8*5/7
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