If A = {0, 1, 2, 3} and B = {…−3, −2, −1}, what is A ∩ B?

{…−3, −2, −1, 0, 1, 2, 3, …}

{…−3, −2, −1}

{0, 1, 2, 3}

{ }

Question

If A = {0, 1, 2, 3} and B = {…−3, −2, −1}, what is A ∩ B?

 {…−3, −2, −1, 0, 1, 2, 3, …}

 {…−3, −2, −1}

 {0, 1, 2, 3}

 { }

dan815 · Answer

A intersect B means they must exist in both sets

dan815 · Answer

A has positive numbers and B has negative numbers just keeps getting more negative

dan815 · Answer

so are there any numbers in A that are also in B?

anonymous · Answer

So first choice ?

dan815 · Answer

nope

dan815 · Answer

{…−3, −2, −1, 0, 1, 2, 3, …}
-3,-2,-1 exist in 2nd set but they dont exist in set 1
and 0,1,2,3 exist in set 1 but dont exist in set 2

dan815 · Answer

that u pointed down symbol means they must exist in both SET A AND B

anonymous · Answer

So it would be choice 3 ?(:

dan815 · Answer

NOthing in A exist in B 
so its the empty set

anonymous · Answer

Oh I get it now !!