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1 February, 20:25

What is the probability of selecting a red marble followed by a blue marble if you replace the marble in between drawing. a box contains 3 red marbles 6 blue marbles and 1 white marble

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  1. 1 February, 21:14
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    Basically, choosing one red marble out of everything is 3 / 10 because there are 3 chances of picking the red marble and 10 marbles overall. Picking one blue marble would be 6 / 10, or 3 / 5. You would multiply these two probabilities together because they are independent of each other:

    (3 / 10) * (3 / 5) = 9 / 50

    The probability is 9 / 50.
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