Question

find B U D.
B: {−2, −1, 1, 4, 7, 12}
D: {numbers divisible by 3 from 1 to 15}

{12}

{−2, −1, 1, 3, 4, 7, 12}

{−2, −1, 1, 3, 4, 6, 7, 9, 12, 15}

{ }

Answer 1

B U D means B union D
and will contain all the elements in B and D

Answer 2

does that help?

Answer 3

thanks

Answer 4

yw