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27 February, 03:02

A bag contains 8 red marbles, 3 blue marbles and 7 green marbles. If three marbles are drawn out of the bag, what is the probability, to the nearest 1000th, that all three marbles drawn will be red?

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  1. 27 February, 03:14
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    Step-by-step explanation:

    A bag contains 8 red marbles, 3 blue marbles and 7 green marbles.

    Total = 18 marbles.

    Probability of drawing three red marbles = probability of drawing one red without replacement + probab of drawing another without reeplacement + probab of drawing a third without replacement.

    Probability of drawing three red marbles = 8/18 + 7/17 + 6/16 = 0.4444 + 0.4118 + 0.3750 = 1.2312.
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