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 certain person will buy a shirt is 0.2, the probability that he will buy a trouser is 0.3, and the probability that he will buy a shirt given that he buys a trouser is 0.4. Find the probability that he will buy both a shirt and a trouser. Find also the probability that he will but a trouser given that he buys a shirt.

If a person visits his dentist, suppose the probability that he will have his teeth cleaned is 0.48, the probability that he will have cavity filled is 0.25, probability that he will have a tooth extracted is 0.20, the probability that he will have teeth cleaned and cavity filled is 0.09, the probability that he will have his teeth cleaned and a tooth extracted is 0.12, the probability that he will have as cavity filled and tooth extracted is 0.07, and the probability that he will have his teeth cleaned, cavity filled , and tooth extracted s 0.03. What is the probability that a person visiting his dentist will have at least one of these things done to him?

Sameer throws , an ordinary die . What is the probability that he throws 5

The probability that a person visiting a zoo will see the girafee is 0.72, the probability that he will see the bears is 0.84 and the probability that he will see both is 0.52.

Sameer throws , an ordinary die . What is the probability that he throws 2 or 5 ?

The probability that a person will win a game is (2)/(3) and the probability that he will not win a horse race is (5)/(9) . If the probability of getting in at least one of the events is (4)/(5) ,what is the probability that he will be successful in both the events ?

The probability that a person will get an electric contact is 2/5 and the probability that he will not get plumbing contract is 4/7 . If the probability of getting at least one contract is 2/3 , what is the probability that he will get both.

The probability that a man will hit a target in shooting practise is 0.3 . If he shoots 10 times, the probability that he hits the target , is

The probability that a person will get an electric contract is 2/5 and the probability that they will not get plumbing contracts 4/7dot if the probability of getting at least one contract is 2/3 , what is the probability that he will get both?

The probability that a student selected at random from class will pass in Mathematics is 4/5, and the probability that he/she passes in Mathematics and Computer Science is ½. What is the probability that he/she will pass in Computer Science if it is known that he/she has passed in Mathematics?