Question

A = {…-6, -4, -2} and B = {1, 2, 3, …}, what is A ∩ B?
Answer
{1, 2, 3, …}
{…-6, -4, -2, 1, 2, 3, …}
{ }
{…-6, -4, -2}

Answer 1

{ }

Answer 2

∩ means "intersects." Just find the elements both sets have in common, which is none... so {}.

Answer 3

Set A is basically x<=-2. Set A is x<=1. Neither intersect