at a brunch buffet,93 people chose coffee for their beverage and 47 people chose juice .25 people chose both coffee and juice ,if each person chose at least one of these beverages ,find how many people visited the buffet using venn diagram?
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Step-by-step explanation:
N(A) = no of people choosing coffee = 93
N(B) = no of people choosing juice = 47.
N(A intersection B) = 25.
as it is given that everyone chooses atleast one drink so, N (A union B) = no of people visited.
By Venn diagram rule,
N(A U B) = N(A) + N(B) - N(A Ū B )
= 93+47 -25
= 115.
P.S: Ū is used for intersection.
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