160 people were surveyed and asked if they believe in UFOs,ghosts, and Bigfoot

42 believed in UFOs
21 believed in Bigfoot
6 believed in ghosts and Bigfoot
2 believed in all three
45 believed in ghosts
11 believed in UFOs and ghosts
4 believed in UFOs and Bigfoot

How many people surveyed believed in at least one of these things? 29+30+13=72