Probability Tes...

An event has odds in favour 4:5, then the probability that event occurs is

For an event, odds against is 6:5. The probability that event does not occur is

In a horse race the odds in fovour of three horses 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 both the events are independent, then the probability that at least one of the events will happen is

If odds against solving a question by three students are 2:1, 5:2 and 5:3 respectively, then probability that the question is solved only by one student is

Three ships A, B and C sail from England to India. If the ratio of their arriving safely are 2:5, 3:7 and 6:11 respectively then the probability of all the ships for arriving safely is

A party of 23 persons take their seats at a round table. The odds against two persons sitting together are

The probabilities of three mutually exclusive events are 2/3, 1/4 and 1/6. The statements is

If A and B are two events such that P(A) = 0.4, P(A + B) = 0.7 and P(AB) = 0.2, then P(B) =