A, B and C try to hit a target simultaneously but independently. Their respective probabilities of hitting the target are `3/4, 1/2 and 5/8`. Find the probability that the target: is hit.

Three persons work independently on a problem. If the respective probabilities that they will solve it are 1/3, 1/4 and 1/5, then find the probability that none can solve it.

The probability of hitting a target in any shot is 0.2.If 10 shots are fired,find the probability that the target will be hit atleast twice.

Two aeroplanes I and II bomb a target in succession. The probabilities of I and II scoring a hit correctly are 0.3 and 0.2 respectively. The second plane will bomb only if the first misses the target. The probability that the target is hit by the second plane is

Three players A, B and C paly a game. The probability that A, B and C will finish the game are respectively 1/2, 1/3 and 1/4. The probability that the game is not finished is

The probabilities of solving a question by three students are 1/2,1/4,1/6 respectively. The probability of the equation being solved will be

The probability that a man can hit a target is 3//4 . He tries 5 times. The probability that he will hit the target at least three times is