Math

posted by Zion

Without looking, George pulls socks from a drawer containing 2 white socks, 3 black socks, and 5 yellow socks. With each pull, a sock is removed from the drawer and is not replaced. Find the probability of drawing a yellow, black, and white sock in that order?

do we had 5/10 +3/10+2/10?

  1. Reiny

    no, you cant add them
    notice you would have a probability equal to 1, which means the event you want will always happen.

    prob(yellow, black, then white)
    = (5/10)(3/9)(2/8)
    = 1/24

    notice that each time a sock is pulled there is one less to choose from, hence the decreasing denominators

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