Question 1145108
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The difference can be 1  (for the primes 2 and 3).


The difference can be 2  (for the primes 3 and 5).


The difference can be 3  (for the primes 2 and 5).


The difference can not be 7.


    (if both primes are greater than 2, then they both are odd -- hence, the difference must be an EVEN number.

     If one prime is 2, then the other positive integer with the difference of 7 must be 2+7 = 9, but 9 is not a prime number).


<U>ANSWER</U>.  Option D).
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