Believers in UFOs,Ghosts and Bigfoot

Total of 160 people surveyed.
2 believed in everything

4 people believed in UFOs and bigfoot, but 2 of them believe in everything(4-2=2)
11 believed in ufos and ghosts but 2 of them believed in everything(11-2=9)
6 believed in bigfoots and Ghosts(6-2=4)
42 believed in UFOs but 13 are already accounted for(42-13=29)
45 believed i ghosts but 15 were already accounted for leaving 30(45-15=30)
21 believd in bigfoot but 8 were accounted for leaving 13.

Adding these figures gives us a total of 89 people that believe in at least one of these things