Question

If A = {2, 4, 6, 8, 10} and B = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, what is A union B?

{2, 4, 6, 8, 10}

{1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 8, 9, 10, 10}

{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

{ }

Answer 1

so whats the answer?

Answer 2

Remember, union sets are like the "union" of marriage. If one of you had a toaster when you got married, then the marriage has a toaster. If you both had a toaster, then the marriage has a toaster. But only ONE of you HAS to have it, for the union to have it. :)

Answer 3

Here we give the work out then u can get the answer, We don't just give out the answer.

Answer 4

i learn all day.. im just trying to finish this virtual school sorry it matters so much

Answer 5

It only matters if you want to understand the concept, so that you won't have to ask again the next time you have a similar problem.

Answer 6

Look at the choices and see which one has all the numbers in it only once and there is ur answer

Answer 7

see idk how to do that..

Answer 8

Don't get frustrated, @nunncm . There are 3 of us here trying to help you UNDERSTAND it.

Answer 9

look which of your choices have all the numbers in A and B

Answer 10

the third one?

Answer 11

To be the union, it must have every element in it that's in either A, or B, or both.

So if A={1,2,3} and B={3,4,5} then A union B={1,2,3,4,5}, see?

Answer 12

u kidding?

Answer 13

A has 2, 4, 6, 8 and 10 right?

so the union has those plus 1, 3, 5, 7 & 9 from B because the evens were already accounted for.

Answer 14

im soo confused.. haha

Answer 15

Hooray! Also worth remembering: if one of the sets happens to be a subset of the other (e.g., as here, everything in A is in B, and then some other stuff), then the "larger" set is the union of the 2. (And the smaller set - the subset - is the intersection of the 2.)

Answer 16

huh? this is why ive taken algebra1 2 years in a row :/

Answer 17

A union B is all of it - everything in either set, and everything in both (if they overlap - they might not)