Marquis conducted a survey asking people which of the following devices they own: a smartphone, a tablet, or a laptop. The Venn diagram that follows shows his results. Based on the diagram, determine each of the following:
[list]
[*]the number of people Marquis surveyed
[*]the number of people who own all three devices
[*]the number of people who own just a smartphone and a laptop
[*]the number of people who own only a tablet, only a laptop, or both a tablet and a laptop
[*]the number of people who do not own a tablet
[/list]
Assume that everyone Marquis asked responded to the survey, and everyone owned at least one of the devices.
