Anonymous
Anonymous asked in Science & MathematicsMathematics · 4 weeks ago

probability problem?

Three students bring identical umbrellas to class and leave them in a pile by the door. When they leave, they each just grab a random umbrella.

What is the probability that no one gets their original umbrella?

2 Answers

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  • Ian H
    Lv 7
    4 weeks ago
    Favorite Answer

    Let a, b, c be the correct umbrellas for the people below. Options are

    A B C

    a, b, c

    a, c, b

    b, a, c   no one has correct umbrella

    b, c, a   no one has correct umbrella

    c, a, b, 

    c, b, a

    Probability = 1/3

  • 4 weeks ago

    33.333333%   (1/3)

    There are 6 combinations total, and out of those 2 have each student picking up a different umbrella than carried in

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