Question

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

{1, 2, 3, …}

{…−6, −4, −2, 1, 2, 3, …}

{ }

{…−6, −4, −2}

Answer 1

That upside down U means we need the "intersect" of A and B...that is, we need everything that is in both A and B. We don't want the stuff that is in just one of the 2 sets. What numbers are in both of these sets?

Answer 2

c

Answer 3

bingo

Answer 4

thx