The union set combines the elements that are in different sets to form a new set
Assume that we have the following sets
The union of both sets is the collection of the elements of both sets (without repetition)
Assume that, we have:
A = {2,4,5}
B = {1,2,7}
The union of both sets would be:
A u B = {1,2,4,5,7}
See attachment for the graphical representation of the union set
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