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March 28, 2017

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A package contains 9 candy canes, 6 of which are cracked. If 2 are selected, find the probability of getting no cracked candy canes.

  • math - ,

    3 out of 9?

  • math - ,

    so three are not cracked.

    prob of getting 2 not cracked = 3/9)(2/8) = 1/12

    or

    choose 2 from the 3 non-cracked = C(3,2) = 3
    choose any 2 of the 9 = C(9,2) = 36
    so prob = 3/36 = 1/12

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