If the odds in favour of event A are `4:5`, find P(A).

In a horse race the odds in favour of these horse are 1:2, 1:3 and 1:4.The probability that one of the horse will win the race is

The odds against a certain event is 5 : 2 and the odds in favour of another event is 6 : 5. If the both the events are independent, then the probability that at least one of the events will happen is

If odds in favour of X solving a problem are 4:3 and odds against Y solving the same problem are 2:3 . Find, the probability of: Y solving the problem.