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integers less than 10

Mathematics
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Two different integers are randomly selected from the set of positive integrs less than 10. What is the probability that their product is a perfect square? Express your answer as a common fraction.

Aug 13th, 2014

P(perfect square)=3/10        (1,4,9)

                             =.3

Aug 13th, 2014

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Aug 13th, 2014
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Aug 13th, 2014
Dec 10th, 2016
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