In a large metropolitan area, the probabilities are 0.87,0.36,0.30 that a family (randomly chosen for a sample survey) owns a colour televise set, a black and white television set, or both kinds of sets. What is the probability that a family owns either any one or both kinds of sets?

Explanation

Let `E_1` be the event that family own colour television set and E2 be

the event that family owns a black and white television set.


it is given that, `P(E_1)=0.87`


`P(E_2)=0.36`


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