Question

MEDALS TO ALLLLLL!
The set S represents odd numbers to 31.
S = {1, 3, 5, 7, 9, 11, 13, 15, 17, 21, 23, 25, 27, 29, 31}

The set C represents multiples of 5 to 30.
C = {5, 10, 15, 20, 25, 30}

How many elements are in the set S union C?

Answer 1

18 -

union meanss to combine terms but don't duplicate

Answer 2

so the answer is 18-

Answer 3

just 18