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The UNION of two sets is the set of elements which are in either set.

For example: let C = (4, 5, 6) and let D = (6, 7, 8). Now the UNION of C and D, written C D = (4, 5, 6, 7, 8). There is no need to list the 6 twice.

The INTERSECTION of two sets is the set of elements which are in both sets.

For example: let C = (4, 5, 6) and D = (6, 7, 8). The INTERSECTION of C and D, written C D = (6).

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Q: What is the difference between intersection and union?
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Difference between Union and Set Intersection Operation?

union means to group the given sets. where as intersection means to pick out the common elements from the given sets. if set a has 1,2,3 elements and B has 1,2,3,4,5. then its union will have 1,2,3,4,5 as its elements. and its intersection will have 1,2,3 as its elements.


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if we have set A and B consider A={1,2,3,4}and B={3,4,5,6} the union of these sets is A and B={1,2,3,4,5,6}and the intersection is{3,4} the union and the intersection are same only if A=B


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