Question

:D

Answer 1

A union B is the same as A or B

so, A is 3,5,7,9,11
and B is 4,8,12

A union B is 3,4,5,7,8,9,11,12

Answer is B

Answer 2

Oh sorry!

Answer 3

A is 3,5,7,9,11
and B is 3,6,9,12
A union B is 3,5,6,7,9,11,12
it's C

Answer 4

yeah this one
{3,5,6,7,9,11,12}
:)

Answer 5

yeah no prob