Thu June 09, 2011 By:

can A union B also called as SET A+ SET B???

Expert Reply
Thu June 09, 2011
No, because union means all non-common and common elements whereas addition means common elements will be counted twice.
eg. A={1,2,3,4,5} and B={3,4,5,6,7}
A union B = {1,2,3,4,5,6,7}
A+B = {1,2,3,4,5,3,4,5,6,7}
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