BIGFOOT
13
UFO
29
GHOST
30
2
4
9
2
MGF1106: DQ1 SETS
How many people believe in at least one thng: 30+29+13=72
72 people believe in at least one thing.
30 believed in ghots only
29 believed in UFOs only
13 believed in Bigfoot only.
A total of 72 people believed in only one thing.