The video tutorial explains Venn diagrams and set theory concepts, including union, intersection, and complement of sets. It guides through calculating the union of sets A and B, finding the intersection, and determining the probability of a number being in the complement of set A. The tutorial emphasizes understanding these concepts to solve related problems effectively.

List the numbers that are in the union of set A and set B.

What does the symbol 'U' represent in set theory?

What are the numbers that belong to both set A and set B?

Explain what A dashed A complement means in the context of set theory.

Calculate the probability of randomly selecting a number that is not in set A.