A survey of 1,010 tourists visiting Orlando was taken. Of those surveyed:
How many tourists only visited the LEGOLAND (of these three)?
Denote Magic Kingdom by M
LEGOLAND by L
Universal Studios by U.
16 tourists had visited all three theme parks.
So (87-16)=71 tourists had visited only the Magic Kingdom and LEGOLAND.
(97-16)=81 tourists had visited only the Magic Kingdom and Universal Studios
(93-16)=77 tourists had visited only LEGOLAND and Universal Studios
257-(81+16+71)=89 tourists had visited the Magic Kingdom o...
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