Probability Union Intersection

union & intersection of an event

Union

The union of two sets is a new set that contains all of the elements that are in at least one of the two sets. The union is written A∪B or “A or B.

Intersection

The intersection of two sets is a new set that contains all of the elements that are in both sets. The intersection is written as A∩B or A and B.

​The Venn Diagram shows fdifferent ball games where grade 10 -Jupiter students want to participate in.

​1. How many students want to play Football or Volleyball?
2. How many students want to play Basketball or Football?
3. How many students want to play either Basketball or Volleyball?
4. How many students want to play in at least one of the game?
5. How many students want to play both Football and Volleyball?

​The Venn Diagram shows fdifferent ball games where grade 10 -Jupiter students want to participate in.

​6. How many students want to play Football and Basketball?
7. How many students want to play Basketball and Volleyball?
8. How many students are interested to join the 3 games?
9. How many students are not interested to join the 3 games?
10. How many grade 10 students are in the class?