There are 5 machines. Probability of a machine being faulted is `1/4` . Probability of atmost two machines is faulted, is `(3/4)^3 k`, then value of k is

In a workshop,there are five machines.The probability of any one of them to be out of service on a day is (1)/(4) .If the probability that at most two machines will be out of service on the same day is ((3)/(4))^(3)k ,then k is equal to

In a workshop, there are five machines and the probability of any one of them to be out of service on a day is (1)/(4) . If the probability that at most two machines will be out of service on the same day is ((3)/(4))^(3)k then k is equal to :

In a hospital,there are 5 dialysis machines. The chance of any one of them being during a day is (1)/(10) .Find the probability that two machines will be out of order on the same day, What is defectivethe that atprobability least one machine in order?

In a hospital, there are 5 dialysis machine. The chance of any one of them being defective during a day is 1/10 . Find the probability that two machines will be out of order on the same day. What is the probability that at least one machine is in working order? Is this situation alright for a small hospital?

In a hospital,there are 4 dialysis machines. The chance of any one of them being defective during a day is.(1)/(6), Find the probability that at least two machines will be in working order out of 4 so that at least two patients may use the dialysis machine.

The probability that a machine will accept a particular Rs 1 coin is 0.9. The probability that the machine will not accept a particular Rs 1 coin, is

There are four machines and it is known that exactly two of them are faulty machines are identified . Then the probability that only two tests are needed is :

A machine has fourteen identical components that function independently. It will stop workinng if three or more components fail. If the probability that a component fails is equal to 0.1, then the probability that the machine will be working is

The rate of depreciation of a machine is 15% of its value in the beginning of the year. If the value of the machine is Rs. 6141250 at the end of 3 years, then what was the value of the machine at the beginning iof the first year?