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UFO's

42

Big Foot

21

 

 

Ghosts

45

2

9

4

2

How many believed in all 3?

160 People Surveyed

2 People believed in all 3

4 UFO/BF - 2 = 2 (BF/UFO)
6 Ghosts/BF - 2 = 4 (G/BF)
11 UFO/Ghosts - 2 = 9 (UFO/G)
21 Big Foot
45 Ghosts
42 UFO

Add all numbers in venn diagram together

160 - 125 = 35

Answer: 35