What are the possible values for $\displaystyle a^{2}mod 4$? So is this as easy as I think it is? It would just be values of the form $\displaystyle a^{2} + 4n, n\in \mathbb{Z}$, or am I missing something?
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Originally Posted by Pinkk What are the possible values for $\displaystyle a^{2}mod 4$? So is this as easy as I think it is? It would just be values of the form $\displaystyle a^{2} + 4n, n\in \mathbb{Z}$, or am I missing something? 1^2 (mod 4)=1, 2^2 (mod 4)=0, 3^2 (mod 4)=1... 0 and 1 are the possible values for a^2 (mod 4).
Hmm, okay,so if I understand this correctly, then the only possible values for $\displaystyle a^{2}mod8$ are 0, 1, and 4, correct?
Originally Posted by Pinkk Hmm, okay,so if I understand this correctly, then the only possible values for $\displaystyle a^{2}mod8$ are 0, 1, and 4, correct? Yes.
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