Question

Find C D.
C: {3, 6, 9, 12, 15, 18}
D: {numbers divisible by 2 from 1 to 20}

{2, 4, 6, 8, 10, 12, 14, 16, 18, 20}

{6, 12, 18}

{2, 3, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20}

{ }

Answer 1

what sign as between C and D?

Answer 2

wait what?

Answer 3

is it U (union) or intersect for example?

Answer 4

its an upside down U

Answer 5

oh ok - that means intersect
- which stands for a set containing elements which are in both

Answer 6

can u see which one it is

Answer 7

so 6,12,18?

Answer 8

yes - u got it
those are the only 3 elements which are in both C and D