OpenStudy (anonymous):

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

6 years ago
OpenStudy (anonymous):

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

6 years ago
OpenStudy (anonymous):

oh sorry its U

6 years ago
OpenStudy (anonymous):

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

6 years ago
OpenStudy (anonymous):

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

6 years ago
OpenStudy (anonymous):

thank you guys

6 years ago
OpenStudy (anonymous):

np :)

6 years ago