A man firing a distant target has 20% chance of hitting the target in one shot. If P be the probability of hitting the target in atmost ‘n’ attempts where `20P^(2)-13P+2le0` then maximum value of n is

A man firing a distant target has 20% chance of hitting the target in one shot. If P be the probability of hitting the target in atmost 'n' attempts where 20P^(2)-13P+2 le0 . then maximum value of n is.

A man firing a distant target has 20% chance of hitting the target in one shot. If P be the probability of hitting the target in atmost 'n' attempts where 20P^(2)-13P+2 le0 . then maximum value of n is.

Column I, Column II If the probability of getting at least one head is at least 0.8 in n trials, then value of n can be, p. 2 One mapping is selected at random from all mappings of the set s={1,2,3, ... ,n} into itself. If the probability that the mapping being one-one is 3/32, then the value of n is, q. 3 If m is selected at random from set {1,2,..., 10} and the probability that the quadratic equation 2x^2+2m x+m+1=0 has real roots is k , then value of 5k is more than, r. 4 A man firing at a distant target as 20% chance of hitting the target in one shoot. If P be the probabililty of hitting the target in "n" attempts , where 20 P^2-13 P+2lt=0, then the ratio of maximum and minimum value of n is less than, s. 5

The probability of a man hitting a target is 1/2. How many times must he fire so that the probability of hitting the target at least once is more than 90 %dot

The probability of a man hitting a target is 1/4. How many times must he fire so that the probability of his hitting the target at lest once is greater than 2/3?

The probability of a man hitting a target is (2)/(5) . He fires at the target k times (k, a given number) . Then the minimum k, so that the probability of hitting the targer at least once is more than (7)/(10) , is

If P(n ,4)=20xxP(n ,2), then find the value of n

If p^(2)-p+1=0 , then the value of p^(3n) can be

A rifleman is firing at a distance target and hence has only 10% chance of hitting it. Find the number of rounds; he must fire in order to have more than 50% chance of hitting it at least once.

Three persons A,B and C, fire at a target in turn, starting with A. Their probability of hitting the target are 0.4, 0.3 and 0.2, respectively. The probability of two hits is