A student is chosen at random from this diagram. Let event A = The student is in jazz band. Let event A = The student is in jazz band. Let event B = The student is in drum line.

Which students are in B? What is P(B)?

Which students are in Ac? What is P(Ac)?

I am confused, do i look at the students that are assigned to both? or just one or the other?

The number of students in the drum line are only tow who are Joe and Abbie.

Explanation:

A Venn diagram is an outline that shows all conceivable legitimate relations between a limited assortment of various sets. These outlines delineate components as focuses in the plane, and sets as locales inside shut bends.

A Venn diagram comprises of various covering shut bends, typically circles, each speaking to a set. Since the mathematical term for "a group of things" is "a set", Venn diagrams can be used to illustrate set relationships.