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Mathematics, 03.03.2020 01:39 letsgivepece2309

There are 2 first grade children, 5 second grade children, and 7 third grade children in a room. When choosing two children, what is the conditional probability of choosing a second grade child, given that either a first or a third grade child was chosen first?

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There are 2 first grade children, 5 second grade children, and 7 third grade children in a room. Whe...

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