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Mathematics 7 Online
OpenStudy (anonymous):

intersection of sets

OpenStudy (anonymous):

|dw:1407467573207:dw|

OpenStudy (anonymous):

|dw:1407467673724:dw|

OpenStudy (anonymous):

ahh thanks

jimthompson5910 (jim_thompson5910):

the two sets have nothing in common so that's why they intersect to form the empty set

OpenStudy (anonymous):

@jim_thompson5910 can i ask you another question here

jimthompson5910 (jim_thompson5910):

sure

OpenStudy (anonymous):

|dw:1407467880793:dw|

jimthompson5910 (jim_thompson5910):

General rule |dw:1407468007320:dw| for any set A

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