Question

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

A {1, 2, 3, 4, …}
B { }
C {…,-3, -2, -1}
D {integers}

Answer 1

None of those are correct...

Answer 2

So would it be B?

Answer 3

No, that's not correct. All those answers are wrong.

Answer 4

The compliment of B is just all non-positive integers. So the solution should be
{..., -3, -2, -1, 0}

Answer 5

C would be closest, but it's still wrong.

Answer 6

Thanks VERY much!

Answer 7

No problem :)