The set S represents even numbers from 2 to 30.
S = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30}

The set C represents multiples of 3 from 3 to 30.
C = {3, 6, 9, 12, 15, 18, 21, 24, 27, 30}

How many elements are in the set S intersection C?

5

15

20

25

Question

The set S represents even numbers from 2 to 30.
S = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30}

The set C represents multiples of 3 from 3 to 30.
C = {3, 6, 9, 12, 15, 18, 21, 24, 27, 30}

How many elements are in the set S intersection C?

 5

 15

 20

 25

ranga · Answer

S intersection C means elements that exist in BOTH sets.

Go through each number in set C and see if it is in set S.

Count the number of such elements that are in both C and S and you will have your answer.

ranga · Answer

Also note that set S is all even from 2 to 30.  So all you have to do is count the number of even elements in set C and make sure they are in the range 2 to 30 and you will have your answer.

jenniferjuice · Answer

5?

ranga · Answer

Yes.  

The set S intersection C = { 6, 12, 18, 24, 30 } and there are 5 elements in that set.