A winter resort took a poll of its 400 visitors to see which winter activities people enjoyed ...

A  winter resort took a poll of its 400 visitors to see which winter activities people enjoyed. the results were as follows: 180 liked to ski, 150 liked to snowboard, 60 liked to ice skate, 40 liked to ski and snowboard, 20 liked to ski and ice skate, 10 liked to snowboard and ice skate, and 5 liked all three activities.
a) use a VENN diagram to illustrate the survey b) how many people enjoyed exactly one of these activities?
c) how many people enjoyed none of these activities? d) how many people liked skiing and snowboarding, but not ice skating?