Question

If A = {positive integers} and B = {…,−4, −3, −2, −1} what is A ∩ B?

{ }

{…, −3, −2, −1, 1, 2, 3, …}

{1, 2, 3, 4, …}

{…−3, −2, −1}

Answer 1

A intersect B is where the two sets overlap (where they are in common)

Answer 2

??

Answer 3

what do the two sets have in common?

Answer 4

nothing?

Answer 5

they have 1 in common, 2 in common, 3 in common , ...