2484. There are 25 students in the group, 10 of them ar

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2484. There are 25 students in the group, 10 of them are boys and 15 girls. What is the probability that among the three students caused at random: a) all three girls, b) the first two boys and one girl.

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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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