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Mathematics 7 Online
OpenStudy (anonymous):

Find A ∪ B. (Use the roster method to write the set. Enter EMPTY or ∅ for the empty set.) A = {6, 7, 8} B = {7, 8, 9} A ∪ B =

OpenStudy (bahrom7893):

What does A ∪ B mean?

OpenStudy (anonymous):

I think it means union

OpenStudy (bahrom7893):

Mage, I'm asking help for a reason.

OpenStudy (lanhikari22):

Well I guess that follows with the asker... What does union, the operation, mean?

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