Question

A teacher surveyed her class about their online accounts and wanted to know if they had “Fb” accounts or if they had “Snap ” accounts. The Venn diagram shows her results. If a person from the class is randomly selected, what is the probability that the person has a “Fb” account but not a “Snap” account

a)1/5
b)16/25
c)7/25
d)18/25

Answer 1

a) 1/5

Explanation:

There are 25 students total in the class.

If you look at the Venn Diagram, you can see that only 5 people have only "Fb" accounts.

Therefore, the probability that the person has a “Fb” account but not a “Snap” account is 5/25 or 1/5.