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[" 8.For any positive integer "n," prove...

[" 8.For any positive integer "n," prove that "n^(3)-n" is divisible by "6" ."],[" 9.Prove that if "x" and "y" are both odd positive integers then "x^(2)+y^(2)" is "],[" but not divisible by "4]

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For any positive integer n, prove that n^(3)-n divisible by 6.

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For any positive integer n , prove that n^3-n divisible by 6.

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