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If x and y are prime numbers suchthat x > y > 2, then  mustbe ... ...

If x and y are prime numbers such that x > y > 2, then x2 - y2 must be divisible by which one of the following numbers?
(A)   3
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Press: Set O - Factoring

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Posted: 05/17/2012 05:39
X^2 - y^2 is missing from the question
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Posted: 05/19/2012 20:25
Savina, indeed. "... then x^2 - y^2 must be divisible ..." Thanks for pointing it out. It will be fixed in the next update.
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