Let n be an integer, Let n be an integer.

Let n be an integer

Reference no: EM1317685

Question: Let n be an integer. Prove:

[A] n2 + n + 3 is odd and
[B] n2 + n is even

You are free to use any related facts that have been established except those or their equivalences that you are asked to prove directly.

Reference no: EM1317685

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