Understanding Intersection in Set Theory

Intersection is a set of elements that are common to two or more sets. In other words, it is the set of elements that belong to all of the given sets.

For example, if we have three sets: A = {1, 2, 3}, B = {3, 4, 5} and C = {2, 4, 6}, then the intersection of A and B is {3}, because that is the only element that is common to both sets. The intersection of A and C is {2}, because that is the only element that is common to both sets.

The symbol for intersection is ∩, so we can write the intersection of two sets as A ∩ B or A ∩ C.

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