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

C

Answer 2

\[A \cap B\] means intersection of set A and B or a set in which the members are the common element from set A and set B

you have A = positive integers set
and B = { ...., -4, -3, -2, -1}

are they have a common element? :)
*try to list some members of set A..