Suppose A and B shoot independently until each hits his target. They have probabilities 3/5 and 5/7 of hitting the targets at each shot. Find the probability than B will require more shots than A.

Suppose A and B shoot independently until each hits his target. They have probabilities 3/5 and 5/7 of hitting the target at each shot. The probability that B will require more shots than A is

A and B try independently to solve a problem. Probability that A solves it is (1)/(3) and that B solves is (3)/(5) . Find the probability that the problem is solved

A, B and C try to hit a target simultaneously but independently. Their recpective probabilities of hitting the target are 3/4, 1/2, 5/8 . The probability that the target is hit by A or B but not by C is

The probability that Mr. Q hits a target at any trial is 1/4 . Suppose he tries at the target 10 times. Find the probability that he hits the target (i) exactly 4 times (ii) at least one time.

If the probability of hitting a target by a shooter, in any shot is 1/3, then the minimum number of independent shots at the target required by him so that the probability of hitting the target at least once is greater than (5)/(6) is

A man throws a die until he gets a number greater than 3 . The probability that he gets 5 in the last throw

In a hurdle race a player has to cross 10 hurdles . The probability that he will clear each hurdle is 5/6. What is the probability that he will knock down less than 2 hurdles ?

In a game of chance, a spinnig arrow comes to rest at one of the numbers 1,2,3,4,5,6,7,8. All these are equally likely outcomes. Find the probability that it wil rest at a number less than 9.