The Answer to the Question
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Here's the Solution to this Question
The contrapositive of the above statement is as follows.
If n isn't odd then 3n+2 isn't odd (If n is even then 3n+2 is even).
Let us prove the obtained statement:
If n is even then . Then
6k is even, 2 is even, so 6k+2 is even (as the sum of two even numbers).
Q. E. D.