document.write( "Question 1145108: The difference between 2 prime numbers cannot be
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Algebra.Com's Answer #766300 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "The difference can be 1  (for the primes 2 and 3).\r\n" );
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document.write( "The difference can be 2  (for the primes 3 and 5).\r\n" );
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document.write( "The difference can be 3  (for the primes 2 and 5).\r\n" );
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document.write( "The difference can not be 7.\r\n" );
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document.write( "    (if both primes are greater than 2, then they both are odd -- hence, the difference must be an EVEN number.\r\n" );
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document.write( "     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).\r\n" );
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document.write( "ANSWER.  Option D).\r\n" );
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