Suppose thatb if a person travels the europe for the first time, the probability that he will visit london is 0.70; paris is 0.64; rome is 0.58; amsterdam is 0.58; london and paris is 0.45; london and rome is 0.42; london and amsterdam is 0.41; paris and rome is 0.35; paris and amsterdam is 0.39; rome and amsterdam is 0.32; london, paris and rome is 0.23; london, paris and amsterdam is 0.26; london, rome and amsterdam is 0.21; paris, rome and amsterdam is 0.20, and all 4 cities is 0.12. what is the probability that he will see at least one of these four cities?