Question

Find B union D.
B: {-3, -1, 3, 4, 9, 11}
D: {numbers divisible by 3 from 1 to 15}

A.{3, 9}
B.{-3, -1, 3, 4, 9, 11}
C.{ }
D.{-3, -1, 3, 4, 6, 9, 11, 12, 15}

Answer 1

well we have all the numbers for A so now all we have to do is count how many number are between 1 and 15 then take out the ones that aren't devisable by 3. After you do that you will end up with A and B sets then you have to find which numbers they have in common