Question

If S = {students in Chemistry class} and subset B = {girls in Chemistry class}, what is B'?

A. {boys in Chemistry class}
B. {students in chemistry class}
C. { }
D. {girls in chemistry class}
IS THIS D

Answer 1

@Michele_Laino

Answer 2

yes!

Answer 3

good extra meal for you lol thx lots

Answer 4

thanks! :)

Answer 5

and this one there is no choice with only positive intigers sooo....
If S = {positive integers} and subset T = {positive integers divisible by 3}, what is T'?

{3, 6, 9, 12, ...}
{1, 2, 3, 4, 5, ...}
{1, 2, 4, 5, 7, 8, ...}
{ }

Answer 6

i think it is d?

Answer 7

you have to find the intersection?

Answer 8

how is defined the set T' ?

Answer 9

I understand: T' = S-T, is it right?

Answer 10

umm idk it asks whut t it and it says t is positive intigers

Answer 11

gtg thx any way bye

Answer 12

nvm

Answer 13

I think that T' is the set complementary to the set T, with respect to the set S, so by definition, we have:
T'=S-T

Answer 14

so T' is the set of integer numbers which are not multiple of 3

Answer 15

so, what is the right option?

Answer 16

ohh ok thx gtg bye lots

Answer 17

thanks! :)