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Applications of Venn Diagrams
(A U B)’ = A’ ∩ B’
The compliment of the union is the intersection of each compliment.
(A ∩ B)’ = A’ U B’
The compliment of the intersection is the union of each compliment.
n(T U D) = 231 +195 – 172 = 254.
A. What percent of the teenagers saw at least one band?
B. What percent of the teenagers saw exactly one band?