We are given:A survey of a groupís viewing habits over the last year:
(a) 28% watched gymnastics
(b) 29% watched baseball
(c) 19% watched soccer
(d) 14% watched gymnastics and baseball
(e) 12% watched baseball and soccer
(f) 10% watched gymnastics and soccer
(g) 8% watched all three sports.
Find the percentage that watched none of the three sports.
We are expected to know this formula:
We have: .
. . That is, 48% watched at least one of the sports.
Therefore: . watched none of the sports.