Question

If A = {positive integers} and B = {negative integers}, what is A ∩ B?

{ }

{…, −3, −2, −1, 1, 2, 3 …}

{1, 2, 3, 4 …}

{…−3, −2, −1}

Answer 1

{…, −3, −2, −1, 1, 2, 3 …}