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.In a group of 70 persons, 42 like tea.Out of this group, if one person is chosen at random, what is the probability that he or she doesn't like tea? |
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Answer» Answer: PLEASE mark me as brainlest happy to help Step-by-step EXPLANATION: Let C denote the set of people who like coffee, and T denote the set of people who like tea n(C∪T)=70,n(C)=37,n(T)=52 We KNOW that: n(C∪T)=n(C)+n(T)−n(C∩T) ∴70=37+52−n(C∩T) ⇒70=89−n(C∩T) ⇒n(C∩T)=89−70=19 |
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