debt A sum of $80000 cam Rs 31000 due in 3 years and a debt of Rs 2000 due in 4 years is to be Paid by single payments 4 years hence, Let the current rate of interest be 5% per annum and be compounded annually What should be the single payment due?​

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the asian project is successful and b be the event that the european project is successful. suppose that a and b are independent events with p(a) = 0.2 and p(b) = 0.8. (a) if the asian project is not successful, what is the probability that the european project is also not successful? (b) what is the probability that at least one of the two projects will be successful? (c) given that at least one of the two projects is successful, what is the probability that only the asian project is successful? (round your answer to three decimal places.)