VEN DIAGRAM UFO/GHOST/BIG FOOT

One hundred sixty people were surveyed and asked if they believed in UFOs, ghosts, and Bigfoot.

42 believed in UFOs 45 believed in ghosts

21 believed in Bigfoot 11 believed in UFOs and ghosts

6 believed in ghosts and Bigfoot 4 believed in UFOs and Bigfoot

2 believed in all three

How many people surveyed believed in at least one of these things? ANSWER = 2