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    sri340's Avatar
    sri340 Posts: 5, Reputation: 1
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    #1

    Oct 12, 2009, 10:50 AM
    probability
    What is the probability that a randomly selected two-digit positive integer is a perfect square or a perfect cube? Express your answer as a common fraction.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Oct 12, 2009, 01:01 PM

    You should count how many perfect squares and perfect cubes there are that are 2 digits, and divide this by the total number of 2-digit numbers. Be careful not to double-count 64, which is both a square and a cube. Post back and let us know what you get.
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