Question

If S = {integers} and subset B = {positive integers}, what is B'?

{…,−3, −2, −1}

{integers}

{ }

{1, 2, 3, 4, …}

Answer 1

B' means everything which isnt in B/

Answer 2

{1, 2, 3, 4, …}

Answer 3

So,
D.

Answer 4

Practiaclly Alisha's wrong.