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A positive integer divisor of 11 is chosen at random. What is the probability that this divisor is prime? Express your answer as a common fraction. 

 Jul 12, 2022
 #1
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It is \(\frac{1}{2},\) since 11 has only two divisors, 1 and 11, and 11 is prime while 1 is not.

 Jul 12, 2022

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