Question

Which of the following best describes the set of even integers from –4 to 4?

{–4, –2, 0, 4}

{–4, –3, –2, –1, 0, 1, 2, 3, 4}

{–4, –2, 0, 2, 4}

null set

Answer 1

2n represents even integers where n is an integer.

Answer 2

So is it A,B,C, or D? 2n is not an answer