in a group of hundred people 80 lemon tea 30 take cold coffee and 20 take both lemon tea and cold coffee how many person take neither lemon tea or not cold coffee?
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Answer:
70
Explanation:
The total group is of 100 people.
Number of people who drink tea n(T) = 80
People who don’t like tea n(A) = 20
Number of people who drink coffee n© = 30
People who don’t like coffee n(B) = 70
Number of people who take both n(C intersection T) = 20
People who don’t like coffee or tea n(A intersection B) = n(A) + n(B) – n (C intersection T)
20 + 70 – 20
= 70
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