Question

If C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} and D = {numbers divisible by 3 from 1 to 21}, what is C ∩ D?

A.{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 18, 21}

B.{3, 6, 9, 12, 15, 18, 21}

C.{3, 6, 9}

D.{ }

Answer 1

what does intersection mean?

Answer 2

@darkbbn ?

Answer 3

please let them do some of the work. we are not here to give answers

Answer 4

Intersection is when something pass's throught something

Answer 5

intercetion of two sets A and B is all the elements that are in both set A and set B.
so the elements in the intesection must be on both sets, not just one or the other(unlike the union).

Answer 6

Ok so how would i solve this to get the answer?

Answer 7

?

Answer 8

what are the elements of C?

Answer 9

Elements?...