prove that for any integer n, n[tex]^{2}[/tex] [tex]\cong[/tex] 0 or 1 (mod 3), and n[tex]^{2}[/tex] [tex]\cong[/tex] 0,1,4(mod 5)(adsbygoogle = window.adsbygoogle || []).push({});

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# Modular arith 2

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