Question

If A = {negative even integers} and B = {negative odd integers}, what is A union B?
A) {0}

B) {negative integers}

C) {integers}

D) { }

Answer 1

you know wad is union meant?

Answer 2

I'm guessing he's meaning AUB, i'm thinking AuB is a union of all real integers from -infinite to 0.

Answer 3

@Alan_Andrade , yea u get the Union's meaning, Union doenst meant intersection set, but it included all

Answer 4

Oh I thought it meant intersection. @zheng

Answer 5

@babybri_ , do you know wad is the symbol of intersection?

Answer 6

Is it the upside-down U? @zheng

Answer 7

intersect = n
union = U

Answer 8

Yes it is the upside down U, which kind of like goes for n, and, it only carries those elements that are common to both A and B; whereas the union includes all those in both A and B.

Answer 9

Oooh okay, I sorta get it now. @Alan_Andrade

Answer 10

Okay, I just posted the options it gives me. Which one is it? This question is kind of confusing.. @Alan_Andrade @zheng

Answer 11

which option u think is most likely?

Answer 12

C..? @zheng

Answer 13

As we're encasing all (both even AND (union) odd) negative numbers, it's quite simple. Go for it!

Answer 14

C would imply you are taking into account ALL integers, from -infinite to +infinite, so no.

Answer 15

@babybri_ , for example , u have A = { -2, -4, -6, -8, -10 } and you have B = { -1, -3, -5, -7, -9} , the question for A U B, so what ans you should give?

Answer 16

Seems there's a little confusion. Since you're taking only, and exclusively negative numbers, the answer would be B, negative integers.

Answer 17

But how? Im still a little confused.. @Alan_Andrade

Answer 18

WAIT! No never mind, I understand it now! Thank you soo much! @Alan_Andrade and @zheng

Answer 19

that's great u can understand =D

Answer 20

Good to know you got it. Good luck!