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

\[\cap\] is the AND symbol so it grabs the elements that are in A and B. So what elements are in common between set A and B to grab?

Answer 2

im confused

Answer 3

all positive even numbers?

Answer 4

huh....................?

Answer 5

Ok, A = {-6, -4, -2} has elements: -6, -4, and -2
B= {1,2,3} has elements of 1, 2, 3.
Are any of the elements from A the same as B? No. Therefore \[A\cap B=\{\}\]
the null set

Answer 6

but theres a ....tht means its continous

Answer 7

Not in the direction of one another. The first one stops at -2 and the second one starts at 1. wouldn't it have to be {.... -6,-4,-2,...} to mean all even numbers?

Answer 8

thts y all positive even

Answer 9

so iht would be D

Answer 10

Why not the negative evens then? B={1,2,3,...} not {...,1,2,3,..}
I would assume that to have an infinite set in both directions you would need
{..., -6,-4,-2,...} not {..., -6,-4,-2} otherwise how would you say a set that was all negative even numbers?

Answer 11

So what does the set of all negative even numbers and the set of all positive numbers have in common?

Answer 12

o read it wrong

Answer 13

been there.