The probability that a man can hit a target is `3//4`. He makes 5 trials. The probability that he will hit the target every time he hits is

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

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

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

The probability of a man hitting a target is 1//4 . If he fires 7 times , the probability of hitting the target at least twice is

The probability that a man can hit a target is 3/4 and the probability that he will hit atleast n-1 xx is (189)/(256), then the number of xx,n he tried is