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probability

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The letters of the word Mississippi are placed in a hat. What is the probability that the first two letters drawn are both i if the first letter drawn is not replaced?

  • probability -

    four i's, 11 letters total

    prob of given case = (4/11)(3/10) = 12/110 = 6/55

    or

    C4,2)/C(11,2) = 6/55

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