A man takes the contract of construction work. The probability is 0.30, if there will be no strike. The probability that the construct work will be completed on time are 0.8 and 0.3 in cases of no strike and in case strike respectively. Find the probability that the construction work will be completed in time.

A person has undertaken a construction job. The probabilities are 0.65 that there will be strike. 0.80 that the construction job will be completed on time if there is no strike, and 0.32 that the construction job will be completed on time if there is a strike. Determine the probability that the construction job will be completed on time.

A person has undertaken a construction job. The probabilities are 0.80 that there will be a strike, 0.70 that the construction job will be completed on time if there is no strike, and 0.4 that the construction job will be completed on time if there is a strike. Determine the probability that the construction job will be completed on time.

X and Y can do a piece of work in 20 days and 30 days respectively. The time they take to complete the work by working together is ……………

X and Y can do a piece of work in 20 days and 30 days respectively. The time they take to complete the work by working together is ……………

Shailendra, Amit and Suraj can complete a work in 6, 12 and 15 days respectively. Find the time taken to complete the work if they are working together.

In a building programme the event that all the materials will be delivered at the correct time is M, and the event that the building programme will be completed on time is F. Given that P(M)=0.8 &P(MnnF)=0.65. If P(F) = 0.7, find the probability that the building program me will be completed on time if all the materials are not delivered at the correct time.

A and B can do a work in 20 days and 30 days respectively. A and B work on alternate days. Find the number of days to complete the work

A and B can complete a work in 12 days and 18 days, respectively. A begins to do the work and they work alternately one at a time for 1 day each. The whole work will be completed in how many days?

Assume that the probability that a bomb dropped from an aeroplane will strike a certain target is 0.2. If 6 bombs are dropped find the probability that (i) exactly 2 will strike the target.(ii) at least 2will strike the target.