Explore BrainMass

Explore BrainMass

    Probability: Different Colours of Marbles

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Question: A jar contains 3 white marbles, 2 yellow marbles, 4 red marbles, and 5 blue marbles. Two marbles are picked at random. What is the probability that

    a.) Both are blue
    b.) Exactly 1 is blue
    c.) At least 1 is blue

    © BrainMass Inc. brainmass.com March 4, 2021, 5:39 pm ad1c9bdddf
    https://brainmass.com/math/probability/4460

    Solution Preview

    (a) The event of choosing 2 marbles has:
    14!/(12!2!) = 91 members, corresponding to picking 2 objects out of 14.
    The event of choosing 2 blue ones corresponds to choosing 2 blue marbles among 5: 5!/2!3! = 10.
    The probability is given by ...

    Solution Summary

    This solution is comprised of a response of about 175 words which estimates the probability of selecting particular colours of marbles. All calculations which are necessary are illustrated.

    $2.19

    ADVERTISEMENT