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16 November, 20:17

A bag contains 2 red marbles, 3 green marbles, and 2 black marbles what is the probability of NOT drawing out a black marble

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  1. 16 November, 20:40
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    P (not black) = 5/7

    Step-by-step explanation:

    We need to know the total number of marbles

    2 red + 3 green + 2 black = 7 marbles

    P (not black) = Not black / total

    = ((2 red + 3 green) / total

    = 5/7
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