Question

If A = {1, 2, 3, 4, 5, 6, 7, 8, 9} and B = {3, 6, 9, 12, 15, 18}, what is A U B?

Answer 1

You're missing a sign in between A and B.

Answer 2

oh sorry its U

Answer 3

Alright. Combine all of the numbers in both sets and put them in the curly brackets. Skip any repeated numbers.:
AUB = {...}

Answer 4

U means union = ALL
( don't repeat the same elements, though)

Answer 5

thank you guys

Answer 6

np :)