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Mathematics 15 Online
OpenStudy (anonymous):

What is the probability of choosing a red marble or a green marble out of a bag containing 5 blue marbles, 3 red marbles, and 1 green marble? @kropot72

OpenStudy (kropot72):

The required probability is: \[\frac{number\ of\ red\ marbles+number\ of\ grenn\ marbles}{total\ number\ of\ marbles}\]

OpenStudy (kropot72):

grenn*

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