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Mathematics 7 Online
OpenStudy (anonymous):

If A = {0, 1, 2, 3} and B = {…−3, −2, −1}, what is A ∩ B?

OpenStudy (anonymous):

Empty.

OpenStudy (anonymous):

I could not find the symbol for it. :D

OpenStudy (cwrw238):

there are no common elements in these two sets

OpenStudy (anonymous):

A intersection B means those elements that belong to both A and B

OpenStudy (cwrw238):

i think i've seen empty set written as {} on this site

OpenStudy (anonymous):

Its an empty set.

OpenStudy (anonymous):

That is correct cwrw238! :)

OpenStudy (cwrw238):

i've also seen it written as what looks like a greek letter

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