Question: 4. Prove the following Proposition. Proposition: Let n be an integer, n is even if and only if 42 4. Prove the following Proposition. Proposition:

4. Prove the following Proposition. Proposition: Let n be an integer, n

is even if and only if 41n2

4. Prove the following Proposition. Proposition: Let n be an integer, n is even if and only if 42

4. Prove the following Proposition. Proposition: Let n be an integer, n is even if and only if 41n2

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