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## Answers

- Venn Diagram. The venn diagram are closed circles, name after logician Robert Venn, the used to represent relationships between sets.

- Proper Subsets.

when you've used venn diagram to find the Proper subsets, B is a proper

subset of A.If there exist an element in A does not belong to B.

- Universal Subsets.

The set that contains all elements being discussed.

oww!

PS: Venn diagram consists of two types; The UNION, And INTERSECTION :)

Thanks ! I hope it would help you :)