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How to use Set Theory Calculator

Enter the elements of two sets and the calculator returns their union, intersection and differences with a Venn text summary.

Frequently asked questions

What set operations are supported?

Union (all elements), intersection (shared elements) and difference (elements in one set but not the other).

How do I enter the sets?

List each set's elements separated by commas; duplicates are automatically ignored.

What is the difference between A−B and B−A?

A−B keeps elements only in A; B−A keeps elements only in B — the two are usually different.

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