athleticK athleticK

03-05-2016
Mathematics

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A bag contains 3 green marbles, 7 blue marbles ,band 2 black marbles the probility of randomly picking a green marble

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Ventus14 Ventus14

03-05-2016

first, add the total of all marbles in the bag: 3+2+7=12. this will be our denomonator. the probability is just the number of marbles in this question. there are three green marbles out of 12, and since you cannot simplify, that is your probability: 3/12

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