Three critics review a book. Odds in favour of the book are `5:2, 4:3 and 3:4` respectively for three critics. Find the probability that the majority are in favour of the book.

Three candidates solve a question.Odds in favour of the correct answer are 5:2,4:3 and 3:4 respectively for the three candidates.What is the probability that at least two of them solve the question correctly?

In an essay competition,the odds in favour of competitors P,Q,R S are 1:2,1:3,1:4, and 1:5 respectively.Find the probability that one then win the competitions.

The odds in favour of the occurrence of an event are 3:5 . Find the probability of the non-occurrence of the event.

The odds in favour of an event are 3:4 . Find the probability of the non occurrence of the event.

The odds in favour of an event are 3:2 . Find the probability of the occurrence of the event.

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