If $n$ is an even integer, which of the following must be an odd integer?

3 n - 2

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n - 2

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3 (n + 1)

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2 n

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Solution

The correct option is C $3 (n + 1)$
Consider even integer= $2$
Option A= $(3 \times 2 - 2) = 4$ = Even integer.
Option B= $2 - 2 = 0$ =Even integer.
Option C= $3 (2 + 1) = 9$ = Odd integer
Option D= $2 \times 2 = 4$ = Even integer.
$∴$ Correct answer is option $C$ .

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