Question

The set W represents the elements present in water.

W = {hydrogen, oxygen}

The set C represents the elements present in carbon dioxide gas.

C = {carbon, oxygen}

How many elements are in the set W ∩ C?


1

2

3

4

Answer 1

W ∩ C, or W intersect C, means the set of elements that are in both W and C. With that in mind, how many elements are in W ∩ C?

Answer 2

2?

Answer 3

Which two?

Answer 4

i mean 3

Answer 5

Okay, which three?

Answer 6

carbon, oxygen,hydrogen

Answer 7

Is carbon in both W and C?

Answer 8

no its in C

Answer 9

Okay. And W ∩ C is the set of elements that are in \(\mathbf{both}\) W and C, right?

Answer 10

So is carbon in W ∩ C?

Answer 11

No.

Answer 12

Okay. So how many elements are in W ∩ C?

Answer 13

3

Answer 14

... What three??

Answer 15

i dont get what your trying to say.... ive already said the three

Answer 16

But you just said that carbon wasn't in W ∩ C.....

Answer 17

no, i said it wasnt in W. So theres three elements - carbon, oxygen,hydrogen

Answer 18

say i have an apple and an orange in my left hand
and
i have a pineapple and an orange in my right hand

what fruit is in both the left and right hands?

(this is basically the question)

Answer 19

I asked if carbon was in W ∩ C and you answered no. Which was the correct answer. Carbon is not in W ∩ C. If it's in W ∩ C then it has to be in BOTH W and C.

Answer 20

except just with elements (literally, lol), and "sets" that hold numbers instead of hands

Answer 21

omg okay now i get it. sorryyy lol

Answer 22

its oxygen

Answer 23

so its 1