A tennis match of best of 5 sets is played by two players `Aa n dB` . The probability that first set is won by `A` is 1/2 and if he loses the first, then probability of his winning the next set is 1/4, otherwise it remains same. Find the probability that `A` wins the match.

A tennis match of best of 5 sets is played by two players A and B. The probability that first set is won by A is 1/2 and if he losed the first, then probability of his winning the next set is 1/4, otherwise it remains same. Find the probability that A wins the match.

For a student to qualify,he must pass at least two out of three exams.The probability that he will pass the 1 st exam is p.If he fails in one of the exams,then the probability of his passing in the next exam,is p/2otherwise it remains the same.Find the probability that he will qualify.

In a horse race, the probability that horse A can win is 2/5 and the probability that horse B can win is 1/4 . Find the probability that any one can win the race.

If the probability of a horse A winning a race is 1/4 and the probability of a horse B winning the same race is 1/5, then the probability that either of them will win the race is

The probabilities that three children can win a race are 1/3,1/4 and 1/5 . Find the probability that any one can win the race.

Two players,Sangeeta and Reshma,play a tennis match.It is known that the probability of Sangeeta winning the match is 0.62. What is the probability of Reshma winning the match?

In a horse -race, the probabilities to win the race for three horses A,B and C are 1/4,1/5 and 1/6 respectively. Find the probability to win the race of any one horse.

A student can pass test 1 with a probability of 3/4 . For the next three tests, the probability of passing in test k(k ge 2) depends on his passing test (k-1). If he passes test (k 1), then probability of passing test k is 3/4 otherwise 1/4 . Let p be the probability that he passes at least three tests out of first four, then 16/27p is equal to ____