Question

If T = {integers} and subset W = {positive integers}, what is W′?

{1, 2, 3, …}

{…−3, −2, −1}

{−3, −2, −1, 0}

{ }

Answer 1

This is looking for the complement of W in T again, just like the question about parents and children at a soccer game. So again, you're looking for elements of T that are not in W.