The probability that a person will travel by plane is 3/5 and that he will travel by train is ¼. What is the probability that he (she) will travel by plane or train?

The probability that a person will travel by plane is 3/5 and that he will travel by train is What is the probability that he (she) will travel by plane or train?

The probability that a company executive will travel by plane is (2/5) and that he will travel by train is (1/3). Find the probability of his travelling by plane or train.

The probability that a company executive will travel by train is 2/3 and that he will travel by plane is 1/5 . The probability of his travelling by train or plane is :

The probability that a company executive will travel by train is 2/3 and that he will travel by plane is 1/5. The probability of his travelling by train or plane is (i)2/15 (ii)13/15 (iii)15/13 (iv)15/2

A doctor is to visit a patient. From past experience, it is known that the probabilities that he will come by train, bus, scooter or by car are (3)/(10), (1)/(5), (1)/(10), (2)/(5) respectively. The probabilities that he will be late are (1)/(4), (1)/(3), (1)/(12) , if he comes by train, bus and scooter respectively, but if he comes by car he will not be late. When he arrives, he is late. What is the probability that he comes by train?

A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by train, bus, scooter or by other means of transport are respectively (3)/(10), (1)/(5), (1)/(10) and (2)/(5) . The probabilities that he will be late are (1)/(4), (1)/(3) and (1)/(12) , if he comes by train, bus and scooter respectively, but if he comes by other means of transport, then he will not be late. When he arrives, he is late. What is the probability that he comes by train?

A doctor is to visit a patient. From the past experience, it is known that the probabilities that he will come by train, bus, scooter or by other means of transport are respectively (3)/(10), (1)/(5), (1)/(10) and (2)/(5) . The probabilities that he will be late are (1)/(4), (1)/(3) and (1)/(12) , if he comes by train, bus and scooter respectively, but if he comes by other means of transport, then he will not be late. When he arrives, he is late. What is the probability that he comes by train?