Question

Find the intersection and union of the sets A and B given below:

A = { a, m, w, u, 7, y } , B = { w, y, g, 7}

Answer 1

Intersection: {w, 7, y}

Union: {a, m, w, u, 7, y, g}

Explanation:

The intersection of two or more sets are the elements they have in common, that means the elements that are in all the sets at the same time.

For example, "a" is in A but not in B, that's why is not in the intersection. On the other hand, "w" is in both sets, so it's in the intersection.

The union are all the elements that are in one set or the other, but we don't add the element twice if it's in both sets.

For example, "a" is in A so we add it to the union. "w" is in A so we add it to the union but it's also in B, we don't add it again because it is already in the union.